Math Challenge Quizzy Poo

1. 3.2 ÷ 0.2 =

2

16

64

160

When dividing 3.2 by 0.2, we can think of it as finding out how many times 0.2 can fit into 3.2. By dividing 3.2 by 0.2, we get the result of 16. Therefore, the correct answer is 16.

Explanation

When dividing 3.2 by 0.2, we can think of it as finding out how many times 0.2 can fit into 3.2. By dividing 3.2 by 0.2, we get the result of 16. Therefore, the correct answer is 16.

2. Karla earns $8.50 per hour at her part-time job. Last wee she worked 18 hours. What is the total amount of money she earned?

$40.80

$153.00

$272.00

$312.80

Karla earns $8.50 per hour at her part-time job and worked for 18 hours last week. To find the total amount of money she earned, we multiply her hourly rate ($8.50) by the number of hours she worked (18). This gives us $153.00. Therefore, the correct answer is $153.00.

Explanation

Karla earns $8.50 per hour at her part-time job and worked for 18 hours last week. To find the total amount of money she earned, we multiply her hourly rate ($8.50) by the number of hours she worked (18). This gives us $153.00. Therefore, the correct answer is $153.00.

3. Which of the following is the greatest common factor of 6 and 10?

2

10

30

60

The greatest common factor (GCF) of two numbers is the largest number that divides both of them without leaving a remainder. In this case, the factors of 6 are 1, 2, 3, and 6, while the factors of 10 are 1, 2, 5, and 10. The common factors are 1 and 2, but the greatest common factor is 2 because it is the largest number that divides both 6 and 10 without leaving a remainder.

Explanation

The greatest common factor (GCF) of two numbers is the largest number that divides both of them without leaving a remainder. In this case, the factors of 6 are 1, 2, 3, and 6, while the factors of 10 are 1, 2, 5, and 10. The common factors are 1 and 2, but the greatest common factor is 2 because it is the largest number that divides both 6 and 10 without leaving a remainder.

4. Which is equivalent to 3/20?

3%

5%

15%

20%

The fraction 3/20 can be converted to a percentage by dividing the numerator (3) by the denominator (20) and multiplying by 100. This gives us 15%. Therefore, the option that is equivalent to 3/20 is 15%.

Explanation

The fraction 3/20 can be converted to a percentage by dividing the numerator (3) by the denominator (20) and multiplying by 100. This gives us 15%. Therefore, the option that is equivalent to 3/20 is 15%.

5. Which are multiples of both 4 and 6?

18 and 20

20 and 24

12 and 24

18 and 20

The numbers 12 and 24 are multiples of both 4 and 6. This is because both 4 and 6 are factors of these numbers. For example, 12 can be divided evenly by both 4 (12/4=3) and 6 (12/6=2). Similarly, 24 can be divided evenly by both 4 (24/4=6) and 6 (24/6=4). Therefore, 12 and 24 are the correct answer.

Explanation

The numbers 12 and 24 are multiples of both 4 and 6. This is because both 4 and 6 are factors of these numbers. For example, 12 can be divided evenly by both 4 (12/4=3) and 6 (12/6=2). Similarly, 24 can be divided evenly by both 4 (24/4=6) and 6 (24/6=4). Therefore, 12 and 24 are the correct answer.

6. John completed 60% of a running race before twisting his ankle. What fraction of the race had he finished before getting hurt?

1/3

1/2

3/5

John completed 60% of the running race before twisting his ankle. This means that he finished more than half of the race but less than two-thirds of it. The only option that falls within this range is 3/5. Therefore, the fraction of the race that John had finished before getting hurt is 3/5.

Explanation

John completed 60% of the running race before twisting his ankle. This means that he finished more than half of the race but less than two-thirds of it. The only option that falls within this range is 3/5. Therefore, the fraction of the race that John had finished before getting hurt is 3/5.

7. Carl needs 2 and 2/3 cups of flour to make a cake. he only has 3/8 cup of flour. How much more flour does he need to make the cake?

2 and 1/24

2 and 1/5

2 and 7/24

2 and 5/11

Carl needs a total of 2 and 2/3 cups of flour to make a cake. He already has 3/8 cup of flour. To find out how much more flour he needs, we can subtract the amount he already has from the total amount needed. When we subtract 3/8 from 2 and 2/3, we get 2 and 7/24. Therefore, Carl needs 2 and 7/24 cups more flour to make the cake.

Explanation

Carl needs a total of 2 and 2/3 cups of flour to make a cake. He already has 3/8 cup of flour. To find out how much more flour he needs, we can subtract the amount he already has from the total amount needed. When we subtract 3/8 from 2 and 2/3, we get 2 and 7/24. Therefore, Carl needs 2 and 7/24 cups more flour to make the cake.

8. Mark has 7/8 of his birthday cake left. He wants to give it to 5 people in equal pieces. What fraction of the cake will each friend get to eat?

5/24

4 and 3/8

7/40

Mark has 7/8 of his birthday cake left. He wants to give it to 5 people in equal pieces. To find out what fraction of the cake each friend will get to eat, we need to divide the amount of cake Mark has by the number of people. Dividing 7/8 by 5 gives us 7/40. Therefore, each friend will get to eat 7/40 of the cake.

Explanation

Mark has 7/8 of his birthday cake left. He wants to give it to 5 people in equal pieces. To find out what fraction of the cake each friend will get to eat, we need to divide the amount of cake Mark has by the number of people. Dividing 7/8 by 5 gives us 7/40. Therefore, each friend will get to eat 7/40 of the cake.

9. What is the algebraic expression for the sentence below? 15 less than a number

15-n

N-15

15+n

The algebraic expression for "15 less than a number" is n-15.

Explanation

The algebraic expression for "15 less than a number" is n-15.

10. What are the coefficients in the algebraic expression below? 5s - 6 + 2 - 9c

5s, 6, 2, and 9c

5 and 9

S and c

6 and 2