Math And Science Basic Test! Trivia Quiz

1. What is x in the expression x+5 = 16?

10

11

12

13

In the equation x + 5 = 16, the goal is to find the value of x. To isolate x, we need to subtract 5 from both sides of the equation. This will cancel out the +5 on the left side, leaving us with x = 16 - 5. Simplifying this further, we get x = 11. Therefore, the value of x in the expression is 11.

Explanation

In the equation x + 5 = 16, the goal is to find the value of x. To isolate x, we need to subtract 5 from both sides of the equation. This will cancel out the +5 on the left side, leaving us with x = 16 - 5. Simplifying this further, we get x = 11. Therefore, the value of x in the expression is 11.

2. In 5 +3(2) - 6, which operation should be performed first?

Addition

Subtraction

Multiplication

Division

In the expression 5 + 3(2) - 6, the operation that should be performed first is multiplication. This is because according to the order of operations, multiplication and division should be done before addition and subtraction. In this case, the expression 3(2) represents the multiplication of 3 and 2, resulting in 6. Therefore, the multiplication should be performed first before proceeding with the addition and subtraction.

Explanation

In the expression 5 + 3(2) - 6, the operation that should be performed first is multiplication. This is because according to the order of operations, multiplication and division should be done before addition and subtraction. In this case, the expression 3(2) represents the multiplication of 3 and 2, resulting in 6. Therefore, the multiplication should be performed first before proceeding with the addition and subtraction.

3. If your body temperature is 37 degrees Celsius, your temperature is -

Low

High

Normal

Unpredictable

A body temperature of 37 degrees is considered normal. The average normal body temperature for adults is around 37 degrees Celsius or 98.6 degrees Fahrenheit. This temperature indicates that the body is functioning within the normal range and is not experiencing a fever or hypothermia.

Explanation

A body temperature of 37 degrees is considered normal. The average normal body temperature for adults is around 37 degrees Celsius or 98.6 degrees Fahrenheit. This temperature indicates that the body is functioning within the normal range and is not experiencing a fever or hypothermia.

4. The basic unit of mass in the metric system is

Litre

Second

Gram

Pound

The basic unit of mass in the metric system is the gram. The gram is a unit of measurement for mass and is used to quantify the amount of matter in an object. It is a smaller unit compared to the pound, which is used in the imperial system. The litre is a unit of volume, and the second is a unit of time, so they are not the correct units for measuring mass. Therefore, the correct answer is gram.

Explanation

The basic unit of mass in the metric system is the gram. The gram is a unit of measurement for mass and is used to quantify the amount of matter in an object. It is a smaller unit compared to the pound, which is used in the imperial system. The litre is a unit of volume, and the second is a unit of time, so they are not the correct units for measuring mass. Therefore, the correct answer is gram.

5. What is the value of n in the proportion 5/8 = n/40?

10

20

25

40

In the given proportion 5/8 = n/40, we can cross multiply to find the value of n. Cross multiplying gives us 5 * 40 = 8 * n. Simplifying this equation gives us 200 = 8n. Dividing both sides by 8 gives us n = 25. Therefore, the value of n in the proportion is 25.

Explanation

In the given proportion 5/8 = n/40, we can cross multiply to find the value of n. Cross multiplying gives us 5 * 40 = 8 * n. Simplifying this equation gives us 200 = 8n. Dividing both sides by 8 gives us n = 25. Therefore, the value of n in the proportion is 25.

6. The Greek prefix "kilo" means

10

100

1000

1/1000

The Greek prefix "kilo" means 1000. This prefix is commonly used in the metric system to indicate a multiplication by 1000. For example, a kilogram is equal to 1000 grams and a kilometer is equal to 1000 meters. The prefix "kilo" comes from the Greek word "khilioi" which means thousand.

Explanation

The Greek prefix "kilo" means 1000. This prefix is commonly used in the metric system to indicate a multiplication by 1000. For example, a kilogram is equal to 1000 grams and a kilometer is equal to 1000 meters. The prefix "kilo" comes from the Greek word "khilioi" which means thousand.

7. One litre is equal to _____________centilitres.

10

100

1/10

1/100

One litre is equal to 100 centilitres because there are 100 centilitres in one litre. This is a conversion factor commonly used to convert between these two units of volume.

Explanation

One litre is equal to 100 centilitres because there are 100 centilitres in one litre. This is a conversion factor commonly used to convert between these two units of volume.

8. What is the value of -5⁴?

-20

20

625

-625

(-5)^4 means -5 multiplied by itself four times: -5 x -5 x -5 x -5 = 625. It's important to remember that any negative number raised to an even power results in a positive answer.

Explanation

(-5)^4 means -5 multiplied by itself four times: -5 x -5 x -5 x -5 = 625. It's important to remember that any negative number raised to an even power results in a positive answer.

9. Express 2.34x10³in decimal notation.

2.343

234

2340

23400

The correct answer is 2340. To express a number in decimal notation, we move the decimal point to the right or left based on the exponent. In this case, the exponent is 3, which means we need to move the decimal point 3 places to the right. Starting with 2.34, we move the decimal point to get 2340.

Explanation

The correct answer is 2340. To express a number in decimal notation, we move the decimal point to the right or left based on the exponent. In this case, the exponent is 3, which means we need to move the decimal point 3 places to the right. Starting with 2.34, we move the decimal point to get 2340.

10. The freezing point of water is:

273 K

0 degree

32 degrees Fahrenheit

All of these

The freezing point of water can be expressed in different temperature scales:

273 Kelvin (K)

0 degrees Celsius (°C)

32 degrees Fahrenheit (°F)

Therefore, all of these options correctly represent the freezing point of water.

Explanation

The freezing point of water can be expressed in different temperature scales:

273 Kelvin (K)

0 degrees Celsius (°C)

32 degrees Fahrenheit (°F)

Therefore, all of these options correctly represent the freezing point of water.

11. A certain coin weighs about 5 grams. How many coins would weigh 2 kg?

100

200

400

500

To find the number of coins that would weigh 2 kg, we need to convert the weight of the coins from grams to kilograms. Since 1 kg is equal to 1000 grams, we divide 2000 grams (2 kg) by 5 grams (weight of one coin). This gives us 400, which means that 400 coins would weigh 2 kg.

Explanation

To find the number of coins that would weigh 2 kg, we need to convert the weight of the coins from grams to kilograms. Since 1 kg is equal to 1000 grams, we divide 2000 grams (2 kg) by 5 grams (weight of one coin). This gives us 400, which means that 400 coins would weigh 2 kg.

12. Which of the following is not a monomial?

-xyz

5

2x

1/3xyz

A monomial is a mathematical expression that consists of only one term. In this case, all the options given are monomials except for 1/3xyz. This is because it is a fraction and contains multiple variables (x, y, and z), making it a polynomial rather than a monomial.

Explanation

A monomial is a mathematical expression that consists of only one term. In this case, all the options given are monomials except for 1/3xyz. This is because it is a fraction and contains multiple variables (x, y, and z), making it a polynomial rather than a monomial.

13. Thirty less than a number is written as

30 - n

N - 30

30>n

N<30

"Thirty less than a number" refers to subtracting 30 from a given number. If the number is represented by n, the correct expression is n - 30. Option A (30 - n) incorrectly reverses the subtraction, meaning 30 minus the number. Options C and D are inequalities, not expressions for subtraction, and thus do not represent "thirty less than a number."

Explanation

"Thirty less than a number" refers to subtracting 30 from a given number. If the number is represented by n, the correct expression is n - 30. Option A (30 - n) incorrectly reverses the subtraction, meaning 30 minus the number. Options C and D are inequalities, not expressions for subtraction, and thus do not represent "thirty less than a number."

14. What is the solution to the quadratic equation x^2 - 5x + 6 = 0?

X = 2 and x = 3

X = 1 and x = 6

X = -2 and x = -3

X = -1 and x = -6

To solve the quadratic equation x^2 - 5x + 6 = 0, we can factor it as (x - 2)(x - 3) = 0. Setting each factor equal to zero gives us the solutions x = 2 and x = 3.

Explanation

To solve the quadratic equation x^2 - 5x + 6 = 0, we can factor it as (x - 2)(x - 3) = 0. Setting each factor equal to zero gives us the solutions x = 2 and x = 3.

15. Subtracting 5mn from -12mn is

-17mn

17mn

7mn

-7mn

To subtract -5mn from -12mn, we can think of it as adding 5mn to -12mn. Since the signs are different, we subtract the smaller absolute value from the larger absolute value and keep the sign of the larger value, which is negative. Therefore, -12mn + 5mn equals -17mn.

Explanation

To subtract -5mn from -12mn, we can think of it as adding 5mn to -12mn. Since the signs are different, we subtract the smaller absolute value from the larger absolute value and keep the sign of the larger value, which is negative. Therefore, -12mn + 5mn equals -17mn.