Mathematical Calculations And Measurements Quiz

1) 31 − 7 is

24

26

34

36

The correct answer is 24 because when you subtract 7 from 31, you get 24.

Explanation

The correct answer is 24 because when you subtract 7 from 31, you get 24.

2) A customer needs 2.6 m of pipe and 0.85 m of pipe. What is the total length of pipe he needs?

1.11

1.75

2.91

3.45

The total length of pipe the customer needs is 3.45 meters. This can be calculated by adding the lengths of the two pieces of pipe together: 2.6 + 0.85 = 3.45.

Explanation

The total length of pipe the customer needs is 3.45 meters. This can be calculated by adding the lengths of the two pieces of pipe together: 2.6 + 0.85 = 3.45.

3) Fifteen chocolate tea balls cost $98.25. How much does each tea ball cost?

$6.01

$6.55

$7.01

$7.53

To find the cost of each tea ball, we divide the total cost by the number of tea balls. In this case, we divide $98.25 by 15 to get $6.55. Therefore, each tea ball costs $6.55.

Explanation

To find the cost of each tea ball, we divide the total cost by the number of tea balls. In this case, we divide $98.25 by 15 to get $6.55. Therefore, each tea ball costs $6.55.

4) In this calculation 2 x ____ = 14 the symbol____- stands for

7

12

16

28

The missing number in the calculation is 7. When you multiply 2 by 7, you get 14.

Explanation

The missing number in the calculation is 7. When you multiply 2 by 7, you get 14.

5) Which of the following would you use to draw a circle?

Ruler

Tape measure

Calculator

Pair of compasses

A pair of compasses is used to draw circles because it consists of two arms, one with a pointed end and the other with a pencil or pen attached. The pointed end is placed at the center of the circle, and the pencil or pen is used to draw the circumference by rotating the arms around the center. This tool allows for precise and accurate circle drawing.

Explanation

A pair of compasses is used to draw circles because it consists of two arms, one with a pointed end and the other with a pencil or pen attached. The pointed end is placed at the center of the circle, and the pencil or pen is used to draw the circumference by rotating the arms around the center. This tool allows for precise and accurate circle drawing.

6) A box of tiles contains 50 tiles. How many tiles are there in 12 boxes?

600

510

502

500

If there are 50 tiles in one box, then in 12 boxes there would be 12 times the number of tiles in one box. Therefore, the total number of tiles in 12 boxes would be 50 x 12 = 600.

Explanation

If there are 50 tiles in one box, then in 12 boxes there would be 12 times the number of tiles in one box. Therefore, the total number of tiles in 12 boxes would be 50 x 12 = 600.

7) What is $500 096 in words?

Five thousand and ninety-six dollars

Fifty thousand and ninety-six dollars

Five hundred thousand and ninety-six dollars

Five million and ninety-six dollars

The correct answer is "Five hundred thousand and ninety-six dollars" because the given number is $500,096 which consists of five hundred thousand dollars and ninety-six dollars.

Explanation

The correct answer is "Five hundred thousand and ninety-six dollars" because the given number is $500,096 which consists of five hundred thousand dollars and ninety-six dollars.

8) What is 704 – 288?

416

526

584

992

The correct answer is 416. This is obtained by subtracting 288 from 704, which gives us 416.

Explanation

The correct answer is 416. This is obtained by subtracting 288 from 704, which gives us 416.

9) A man shares $3000 equally between his four children. How much does each child receive?

120

700

705

750

The man shares $3000 equally between his four children, meaning that each child will receive an equal share of the total amount. To find out how much each child receives, we divide $3000 by 4, which gives us $750. Therefore, each child will receive $750.

Explanation

The man shares $3000 equally between his four children, meaning that each child will receive an equal share of the total amount. To find out how much each child receives, we divide $3000 by 4, which gives us $750. Therefore, each child will receive $750.

10) A cake can be cut into 8 slices. How many of these cakes are needed for 128 slices?

18

16

15

11

To find the number of cakes needed for 128 slices, we divide 128 by the number of slices in one cake. Since one cake can be cut into 8 slices, we divide 128 by 8, which equals 16. Therefore, 16 cakes are needed for 128 slices.

Explanation

To find the number of cakes needed for 128 slices, we divide 128 by the number of slices in one cake. Since one cake can be cut into 8 slices, we divide 128 by 8, which equals 16. Therefore, 16 cakes are needed for 128 slices.

11) A school has 5 football teams. It buys 14 shirts for each team. How many shirts does the school buy?

19

50

52

70

The school has 5 football teams and buys 14 shirts for each team. To find the total number of shirts bought, we multiply the number of teams (5) by the number of shirts bought for each team (14). Therefore, the school buys a total of 70 shirts.

Explanation

The school has 5 football teams and buys 14 shirts for each team. To find the total number of shirts bought, we multiply the number of teams (5) by the number of shirts bought for each team (14). Therefore, the school buys a total of 70 shirts.

12) In a diving competition my first dive scores 9.3 points and my second dive scores 7.8 points . What is my total score for the two dives?

16.1

16.11

17.1

17.11

The total score for the two dives is 17.1. This is calculated by adding the score of the first dive (9.3) to the score of the second dive (7.8). The sum of these two scores is 17.1.

Explanation

The total score for the two dives is 17.1. This is calculated by adding the score of the first dive (9.3) to the score of the second dive (7.8). The sum of these two scores is 17.1.

13) What is 6 gallons of milk in pints? (8 pints = 1 gallon)

3/4 pint

1.2 pints

1.33 pints

48 pints

To convert gallons to pints, we need to multiply the number of gallons by the conversion factor of 8 pints per gallon. Therefore, 6 gallons of milk is equal to 6 multiplied by 8, which equals 48 pints.

Explanation

To convert gallons to pints, we need to multiply the number of gallons by the conversion factor of 8 pints per gallon. Therefore, 6 gallons of milk is equal to 6 multiplied by 8, which equals 48 pints.

14) What is 67.62 kg divided by 6?

11.10 kg

11.12 kg

11.20 kg

11.27 kg

To find the answer, we divide 67.62 kg by 6. Performing the division, we get 11.27 kg.

Explanation

To find the answer, we divide 67.62 kg by 6. Performing the division, we get 11.27 kg.

15) Which one of the following lists shows the numbers decreasing each time?

601, 600, 610

600, 610, 600

600, 601, 610

610, 601, 600

The numbers in the list 610, 601, 600 are decreasing each time.

Explanation

The numbers in the list 610, 601, 600 are decreasing each time.

16) In this calculation ¹²/_# = 3 the symbol # stands for

1/4

4

9

36

In the given calculation, the equation 12/# = 3 is provided. To solve for #, we need to find the number that, when divided into 12, equals 3. The only option that satisfies this condition is 4. Therefore, the symbol # in this calculation represents the number 4.

Explanation

In the given calculation, the equation 12/# = 3 is provided. To solve for #, we need to find the number that, when divided into 12, equals 3. The only option that satisfies this condition is 4. Therefore, the symbol # in this calculation represents the number 4.

17) A tin of tomatoes costs 46 cents. What is 46 cents rounded to the nearest 10 cents?

40 cents

45 cents

50 cents

100 cents

When rounding to the nearest 10 cents, we look at the digit in the ones place. If it is 5 or greater, we round up. In this case, the digit in the ones place is 6, which is greater than 5. Therefore, we round up to the nearest 10 cents, which is 50 cents.

Explanation

When rounding to the nearest 10 cents, we look at the digit in the ones place. If it is 5 or greater, we round up. In this case, the digit in the ones place is 6, which is greater than 5. Therefore, we round up to the nearest 10 cents, which is 50 cents.

18) A plane is due to arrive at 18:00 It is delayed by 3 hours. What time should it arrive now?

01:00

09:00

15:00

21:00

The plane was originally scheduled to arrive at 18:00, but it is delayed by 3 hours. This means that it will now arrive 3 hours later than the original scheduled time. Therefore, the plane should arrive at 21:00.

Explanation

The plane was originally scheduled to arrive at 18:00, but it is delayed by 3 hours. This means that it will now arrive 3 hours later than the original scheduled time. Therefore, the plane should arrive at 21:00.

19) Multiply 4064 by 27

36 576

109 708

109 728

292 608

The correct answer is obtained by multiplying 4064 by 27, which equals 109,728.

Explanation

The correct answer is obtained by multiplying 4064 by 27, which equals 109,728.

20) A pack of garbage bags costs $4.42 each. A box of soap powder costs $5.58 each. A customer buys 3 packs of garbage bags and a box of soap powder. What is the total cost?

$17.74

$18.84

$19.00

$19.02

The total cost can be calculated by multiplying the cost of each item by the quantity and then adding them together. In this case, the cost of 3 packs of garbage bags would be 3 * $4.42 = $13.26. The cost of 1 box of soap powder would be $5.58. Adding these two amounts together, the total cost would be $13.26 + $5.58 = $18.84.

Explanation

The total cost can be calculated by multiplying the cost of each item by the quantity and then adding them together. In this case, the cost of 3 packs of garbage bags would be 3 * $4.42 = $13.26. The cost of 1 box of soap powder would be $5.58. Adding these two amounts together, the total cost would be $13.26 + $5.58 = $18.84.

21) What is ³/₄ – ¹/₈?

1/16

1/4

1/2

5/8

To find the difference between two fractions, we need to have a common denominator. In this case, the common denominator is 8. So, we rewrite 3/4 as 6/8. Now, we can subtract 1/8 from 6/8, which gives us 5/8. Therefore, the correct answer is 5/8.

Explanation

To find the difference between two fractions, we need to have a common denominator. In this case, the common denominator is 8. So, we rewrite 3/4 as 6/8. Now, we can subtract 1/8 from 6/8, which gives us 5/8. Therefore, the correct answer is 5/8.

22) What is ²/₅ as a decimal fraction?

0.10

0.25

0.40

0.45

The decimal fraction of 2/5 is 0.40. This can be determined by dividing 2 by 5, which equals 0.4. In decimal form, the number 0.4 is equivalent to 0.40, with the zero after the decimal point representing no additional tenths.

Explanation

The decimal fraction of 2/5 is 0.40. This can be determined by dividing 2 by 5, which equals 0.4. In decimal form, the number 0.4 is equivalent to 0.40, with the zero after the decimal point representing no additional tenths.

23) 1430 is the same time as

2:30 am

2:30 pm

4:30 am

4:30 pm

The correct answer is 2:30 pm because 1430 is the 24-hour format for 2:30 pm. In the 24-hour clock system, the hours go from 00 to 23, so 14 represents 2 pm. The minutes remain the same, so 1430 is equivalent to 2:30 pm.

Explanation

The correct answer is 2:30 pm because 1430 is the 24-hour format for 2:30 pm. In the 24-hour clock system, the hours go from 00 to 23, so 14 represents 2 pm. The minutes remain the same, so 1430 is equivalent to 2:30 pm.

24) A man on a walking holiday walks 26km on the first day and 19km on the second day. How far did he walk in total?

35 km

38 km

45 km

52 km

The man walked 26 km on the first day and 19 km on the second day. To find the total distance he walked, we add these two distances together: 26 + 19 = 45 km. Therefore, the correct answer is 45 km.

Explanation

The man walked 26 km on the first day and 19 km on the second day. To find the total distance he walked, we add these two distances together: 26 + 19 = 45 km. Therefore, the correct answer is 45 km.

25) A book has 148 pages. You read to the end of page 89. How many pages are there still to read?

37

59

61

141

Since the book has 148 pages and the person has already read up to page 89, there are still 59 pages left to read.

Explanation

Since the book has 148 pages and the person has already read up to page 89, there are still 59 pages left to read.

26) There are 24 hours in a day. How many hours are there in a week?

142

148

168

222

The correct answer is 168. There are 24 hours in a day, so to find the number of hours in a week, we multiply 24 by 7 (the number of days in a week). Therefore, there are 168 hours in a week.

Explanation

The correct answer is 168. There are 24 hours in a day, so to find the number of hours in a week, we multiply 24 by 7 (the number of days in a week). Therefore, there are 168 hours in a week.

27) Six people share a bill of $171.00 equally. Each person must pay

$20.10

$20.51

28.03

28.50

not-available-via-ai

Explanation

not-available-via-ai

28) A customer buys 4 kg of green bananas at $4 per kg and 2 cucumbers for $3 each. What is the total cost?

$42

$22

$20

$14

The customer buys 4 kg of green bananas at $4 per kg, which amounts to $16. They also buy 2 cucumbers for $3 each, totaling $6. Therefore, the total cost is $16 + $6 = $22.

Explanation

The customer buys 4 kg of green bananas at $4 per kg, which amounts to $16. They also buy 2 cucumbers for $3 each, totaling $6. Therefore, the total cost is $16 + $6 = $22.

29) An item was $72 A sale offers ^1/₃ off this price. What is ^1/₃ of $72?

20

24

30

33

The question asks for 1/3 of $72, which means finding one-third of the original price. To calculate this, we divide $72 by 3, which equals $24. Therefore, the correct answer is 24.

Explanation

The question asks for 1/3 of $72, which means finding one-third of the original price. To calculate this, we divide $72 by 3, which equals $24. Therefore, the correct answer is 24.

30) Here is a sequence of numbers 1 6 11 ------- The next number is

5

16

17

18

The given sequence of numbers follows a pattern where each number is obtained by adding 5 to the previous number. Starting with 1, we add 5 to get 6, then add 5 again to get 11. Following the same pattern, the next number would be obtained by adding 5 to 11, resulting in 16. Therefore, the correct answer is 16.

Explanation

The given sequence of numbers follows a pattern where each number is obtained by adding 5 to the previous number. Starting with 1, we add 5 to get 6, then add 5 again to get 11. Following the same pattern, the next number would be obtained by adding 5 to 11, resulting in 16. Therefore, the correct answer is 16.

31) What is 6606 written in words?

Sixty thousand six hundred and six

Six thousand six hundred and sixty

Six thousand six hundred and six

Six thousand and sixty six

The number 6606 is written as "six thousand six hundred and six" because the first digit, 6, represents six thousand. The next two digits, 6 and 0, represent six hundred. Finally, the last two digits, 6 and 0, represent six. Therefore, combining all the parts, the number is read as "six thousand six hundred and six."

Explanation

The number 6606 is written as "six thousand six hundred and six" because the first digit, 6, represents six thousand. The next two digits, 6 and 0, represent six hundred. Finally, the last two digits, 6 and 0, represent six. Therefore, combining all the parts, the number is read as "six thousand six hundred and six."

32) A customer buys 1½ kg of apples. This is the same as

1.05kg

1.12kg

1.2kg

1.5kg

The customer buys 1½ kg of apples, which is the same as 1.5kg.

Explanation

The customer buys 1½ kg of apples, which is the same as 1.5kg.

33) 125 students attend interviews at a college on Monday, 142 attend on Tuesday and 142 attend on Wednesday. How many students attend altogether?

267

309

392

409

The total number of students who attended interviews on Monday, Tuesday, and Wednesday can be found by adding the number of students who attended each day. Therefore, 125 + 142 + 142 = 409.

Explanation

The total number of students who attended interviews on Monday, Tuesday, and Wednesday can be found by adding the number of students who attended each day. Therefore, 125 + 142 + 142 = 409.

34) Four copies of the same book cost $56. How much does each book cost?

11

12

14

15

If four copies of the same book cost $56, we can divide the total cost by the number of books to find the cost of each book. $56 divided by 4 is equal to $14. Therefore, each book costs $14.

Explanation

If four copies of the same book cost $56, we can divide the total cost by the number of books to find the cost of each book. $56 divided by 4 is equal to $14. Therefore, each book costs $14.

35) A magazine costs 45¢. How much change should be given from $1?

45¢

65¢

55¢

75¢

The magazine costs 45 cents, so if you pay with $1, you will receive 55 cents as change.

Explanation

The magazine costs 45 cents, so if you pay with $1, you will receive 55 cents as change.

36) What is $2.9 m in figures?

$2 900

$29 000

2 900 000

29 000 000

The given answer, 2 900 000, is the correct representation of $2.9 million in figures. The "m" in the question stands for million, so the answer should have six digits, with the first digit being 2 and the rest being zeros.

Explanation

The given answer, 2 900 000, is the correct representation of $2.9 million in figures. The "m" in the question stands for million, so the answer should have six digits, with the first digit being 2 and the rest being zeros.

37) Add 107, 1009 and 12900.

13 006

13 016

14 006

14 016

The correct answer is 14 016 because when you add 107, 1009, and 12900 together, you get a sum of 14 016.

Explanation

The correct answer is 14 016 because when you add 107, 1009, and 12900 together, you get a sum of 14 016.

38) A customer buys these items Cheese $6.44 Bread $3.99 The customer pays with $20. How much change should the customer receive?

$9.55

$9.57

$10.57

10.67

The customer buys cheese for $6.44 and bread for $3.99, which totals to $10.43. The customer pays with a $20 bill, so the change would be the difference between $20 and $10.43, which is $9.57.

Explanation

The customer buys cheese for $6.44 and bread for $3.99, which totals to $10.43. The customer pays with a $20 bill, so the change would be the difference between $20 and $10.43, which is $9.57.

39) A bill totals $192 4 friends share the cost equally . How much will each have to pay?

40

48

50

53

The bill totals $192 and is shared equally among 4 friends. To find out how much each person will have to pay, we divide the total bill amount by the number of friends. Therefore, $192 divided by 4 equals $48. So, each friend will have to pay $48.

Explanation

The bill totals $192 and is shared equally among 4 friends. To find out how much each person will have to pay, we divide the total bill amount by the number of friends. Therefore, $192 divided by 4 equals $48. So, each friend will have to pay $48.

40) A customer buys 12 packs of ice cream for a party. Each pack costs $4.35 The total cost of the ice cream is

52.20

51.60

48.35

13.05

The customer buys 12 packs of ice cream, and each pack costs $4.35. To find the total cost, we can multiply the cost per pack by the number of packs: $4.35 x 12 = $52.20. Therefore, the correct answer is 52.20.

Explanation

The customer buys 12 packs of ice cream, and each pack costs $4.35. To find the total cost, we can multiply the cost per pack by the number of packs: $4.35 x 12 = $52.20. Therefore, the correct answer is 52.20.

41) What is ¹/₈ as a decimal fraction?

0.125

0.18

0.8

0.81

To convert a fraction to a decimal, divide the numerator (1) by the denominator (8). In this case, 1 divided by 8 equals 0.125. Therefore, 1/8 as a decimal fraction is 0.125.

Explanation

To convert a fraction to a decimal, divide the numerator (1) by the denominator (8). In this case, 1 divided by 8 equals 0.125. Therefore, 1/8 as a decimal fraction is 0.125.

42) A bus journey takes 50 minutes. The bus leaves at 6:55 What time should the bus arrive?

6:05

7:05

7:45

7:55

The bus journey takes 50 minutes, so if the bus leaves at 6:55, it will arrive 50 minutes later. Adding 50 minutes to 6:55 gives us 7:45 as the arrival time.

Explanation

The bus journey takes 50 minutes, so if the bus leaves at 6:55, it will arrive 50 minutes later. Adding 50 minutes to 6:55 gives us 7:45 as the arrival time.

43) Body temperature in °C is normally about

20°C

37°C

50°C

98.4°C

The normal body temperature in degrees Celsius is 37°C. This is the average temperature at which the human body functions optimally. It is important to maintain this temperature as any significant deviation can indicate an underlying health issue.

Explanation

The normal body temperature in degrees Celsius is 37°C. This is the average temperature at which the human body functions optimally. It is important to maintain this temperature as any significant deviation can indicate an underlying health issue.

44) It takes 1.2m of wood to make one picture frame. What length of wood will it take to make 7 of the picture frames?

7.14 m

7.4 m

8.14 m

8.4 m

To find the length of wood needed to make 7 picture frames, we can multiply the length needed for one frame (1.2m) by the number of frames (7). Therefore, 1.2m x 7 = 8.4m.

Explanation

To find the length of wood needed to make 7 picture frames, we can multiply the length needed for one frame (1.2m) by the number of frames (7). Therefore, 1.2m x 7 = 8.4m.

45) One bag of grapes weighs ³/₄ kg and another bag of grapes weighs ¹/₂kg. What is the total weight of the grapes?

1 1/3 kg

1 1/4 kg

4/5 kg

4/6 kg

The total weight of the grapes can be found by adding the weight of the two bags together. The weight of the first bag is 3/4 kg and the weight of the second bag is 1/2 kg. To add these fractions, we need to find a common denominator, which is 4. So, the weight of the first bag can be written as 3/4 kg = 3/4 * 4/4 = 12/16 kg. The weight of the second bag can be written as 1/2 kg = 1/2 * 8/8 = 8/16 kg. Adding these fractions together, we get 12/16 + 8/16 = 20/16 kg. Simplifying this fraction, we get 1 1/4 kg. Therefore, the total weight of the grapes is 1 1/4 kg.

Explanation

The total weight of the grapes can be found by adding the weight of the two bags together. The weight of the first bag is 3/4 kg and the weight of the second bag is 1/2 kg. To add these fractions, we need to find a common denominator, which is 4. So, the weight of the first bag can be written as 3/4 kg = 3/4 * 4/4 = 12/16 kg. The weight of the second bag can be written as 1/2 kg = 1/2 * 8/8 = 8/16 kg. Adding these fractions together, we get 12/16 + 8/16 = 20/16 kg. Simplifying this fraction, we get 1 1/4 kg. Therefore, the total weight of the grapes is 1 1/4 kg.

46) A man is 1.75 metres tall. This could be written as

175 cm

175 mm

1.75 kg

1.75 km

The given question states that a man is 1.75 meters tall. This measurement can be written as 175 cm because there are 100 centimeters in a meter. It cannot be written as 175 mm because there are 1000 millimeters in a meter. Additionally, it cannot be written as 1.75 kg or 1.75 km because these units are used to measure weight and distance respectively, not height. Therefore, the correct answer is 175 cm.

Explanation

The given question states that a man is 1.75 meters tall. This measurement can be written as 175 cm because there are 100 centimeters in a meter. It cannot be written as 175 mm because there are 1000 millimeters in a meter. Additionally, it cannot be written as 1.75 kg or 1.75 km because these units are used to measure weight and distance respectively, not height. Therefore, the correct answer is 175 cm.

47) Four concert tickets cost $43.80 How much does one ticket cost?

10.20

10.38

10.90

10.95

The total cost of four concert tickets is $43.80. To find the cost of one ticket, we divide the total cost by the number of tickets. Therefore, $43.80 divided by 4 is equal to $10.95.

Explanation

The total cost of four concert tickets is $43.80. To find the cost of one ticket, we divide the total cost by the number of tickets. Therefore, $43.80 divided by 4 is equal to $10.95.

48) Which one do you like?

1250

1800

7200

7332

The question asks for the preferred option among the given choices. The correct answer, 7200, is the only option provided without any additional context or criteria. Therefore, it can be assumed that the correct answer is simply the preferred choice among the given options.

Explanation

The question asks for the preferred option among the given choices. The correct answer, 7200, is the only option provided without any additional context or criteria. Therefore, it can be assumed that the correct answer is simply the preferred choice among the given options.

49) The number of people watching a television programme was 752 658. Round this number to the nearest thousand.

750 000

752 000

752 700

753 000

The number 752,658 is rounded to the nearest thousand by looking at the hundreds place. Since the digit in the hundreds place is 5 or greater, the digit in the thousands place is increased by 1. Therefore, the rounded number is 753,000.

Explanation

The number 752,658 is rounded to the nearest thousand by looking at the hundreds place. Since the digit in the hundreds place is 5 or greater, the digit in the thousands place is increased by 1. Therefore, the rounded number is 753,000.

50) In which one of these numbers does 8 have the value of eight hundredths?

2.87

21.68

186

2869

In the number 21.68, the digit 8 is in the hundredths place. This means that 8 represents eight hundredths.

Explanation

In the number 21.68, the digit 8 is in the hundredths place. This means that 8 represents eight hundredths.

51) The temperature inside a refrigerator should be about

-24°C

-14°C

4°C

24°C

The correct answer is 4°C. This is because a temperature of 4°C is considered to be the ideal temperature for a refrigerator. At this temperature, perishable food items can be stored safely without freezing or spoiling. It helps to slow down the growth of bacteria and other microorganisms, extending the shelf life of the food. Additionally, a temperature of 4°C also helps to maintain the quality, texture, and taste of the stored food items.

Explanation

The correct answer is 4°C. This is because a temperature of 4°C is considered to be the ideal temperature for a refrigerator. At this temperature, perishable food items can be stored safely without freezing or spoiling. It helps to slow down the growth of bacteria and other microorganisms, extending the shelf life of the food. Additionally, a temperature of 4°C also helps to maintain the quality, texture, and taste of the stored food items.

52) Add ¹/₁₀ and ²/₅

1/2

3/10

1/4

3/15

To add fractions, we need to find a common denominator. In this case, the common denominator is 10. We then convert 1/10 to have a denominator of 10 by multiplying the numerator and denominator by 5. This gives us 5/50. We convert 2/5 to have a denominator of 10 by multiplying the numerator and denominator by 2. This gives us 4/10. Now that both fractions have a common denominator, we can add them together. 5/50 + 4/10 equals 9/50. However, we can simplify this fraction by dividing both the numerator and denominator by 5, which gives us 1/10. Therefore, the correct answer is 1/10.

Explanation

To add fractions, we need to find a common denominator. In this case, the common denominator is 10. We then convert 1/10 to have a denominator of 10 by multiplying the numerator and denominator by 5. This gives us 5/50. We convert 2/5 to have a denominator of 10 by multiplying the numerator and denominator by 2. This gives us 4/10. Now that both fractions have a common denominator, we can add them together. 5/50 + 4/10 equals 9/50. However, we can simplify this fraction by dividing both the numerator and denominator by 5, which gives us 1/10. Therefore, the correct answer is 1/10.

53) Mirror tiles measure 10cm by 10cm. How many tiles are needed to make a mirror that measures 80cm by 60cm?

48

80

140

280

To find the number of tiles needed, we divide the length and width of the mirror by the length and width of each tile. The mirror measures 80cm by 60cm, and each tile measures 10cm by 10cm. Dividing 80 by 10 gives us 8, and dividing 60 by 10 gives us 6. Multiplying 8 by 6 gives us 48, which is the number of tiles needed to make the mirror.

Explanation

To find the number of tiles needed, we divide the length and width of the mirror by the length and width of each tile. The mirror measures 80cm by 60cm, and each tile measures 10cm by 10cm. Dividing 80 by 10 gives us 8, and dividing 60 by 10 gives us 6. Multiplying 8 by 6 gives us 48, which is the number of tiles needed to make the mirror.

54) How many grams are there in one kilogram?

10000

1000

100

10

There are 1000 grams in one kilogram.

Explanation

There are 1000 grams in one kilogram.

55) ³/₄is the same as

1/ 32

1/ 12

1/4

1/2

The fraction 3/4 is equivalent to 1/2 because when you divide the numerator (3) by the denominator (4), you get 0.75. This can be simplified to 0.5, which is equivalent to 1/2.

Explanation

The fraction 3/4 is equivalent to 1/2 because when you divide the numerator (3) by the denominator (4), you get 0.75. This can be simplified to 0.5, which is equivalent to 1/2.

56) A jar contains 3.5oz of coffee. What is the total amount of coffee in 10 of these jars?

30.5oz

35oz

305oz

350oz

Since each jar contains 3.5oz of coffee, to find the total amount of coffee in 10 jars, we can multiply 3.5oz by 10. This gives us 35oz. Therefore, the correct answer is 350oz.

Explanation

Since each jar contains 3.5oz of coffee, to find the total amount of coffee in 10 jars, we can multiply 3.5oz by 10. This gives us 35oz. Therefore, the correct answer is 350oz.

57) One cake recipe requires ¹/₂ lb of margarine and another requires ³/₄ lb. How much margarine is needed to make both cakes?

4/8 lb

4/6

1 lb

Option 4

To find the total amount of margarine needed to make both cakes, we need to add the amounts required for each recipe. The first recipe requires 1/2 lb of margarine and the second recipe requires 3/4 lb. To add these fractions, we need to find a common denominator, which is 4. Then, we can add the numerators: 1 + 3 = 4. So, the total amount of margarine needed is 4/4 lb, which simplifies to 1 lb. Therefore, option 3 is the correct answer.

Explanation

To find the total amount of margarine needed to make both cakes, we need to add the amounts required for each recipe. The first recipe requires 1/2 lb of margarine and the second recipe requires 3/4 lb. To add these fractions, we need to find a common denominator, which is 4. Then, we can add the numerators: 1 + 3 = 4. So, the total amount of margarine needed is 4/4 lb, which simplifies to 1 lb. Therefore, option 3 is the correct answer.