Real Numbers Quiz: Test Your Knowledge - Ninth Grade Math

Question 1

Which of the following is an irrational number?

Accepted Answer

√2

Answer

4/5

Answer

-3

Answer

0.25

Question 2

What is the result of (√9 + 5) / 2?

Accepted Answer

4

Answer

7

Answer

3.5

Answer

2

Question 3

A farmer has to fence a rectangular garden of area 25 square meters.  What is the length of one side of the garden?

Accepted Answer

5 meters

Answer

12.5 meters

Answer

62.5 meters

Answer

10 meters

Question 4

Which number is a rational number that lies between -2 and -1?

Accepted Answer

-1.5

Answer

-√2

Answer

-√3

Answer

-π

Question 5

Which of the following statements about integers is true?

Accepted Answer

The sum of any two integers is always an integer.

Answer

The square root of any integer is always an integer.

Answer

The quotient of any two integers is always an integer.

Answer

The product of any two integers is always an integer.

Question 6

Simplify the expression: |-8| - |3|

Accepted Answer

5

Answer

11

Answer

-5

Answer

-11

Question 7

Which set contains only natural numbers?

Accepted Answer

{1, 2, 3, ...}

Answer

{0, 1, 2, 3...}

Answer

{...-3, -2, -1, 0, 1, 2, 3...}

Question 8

A recipe calls for 2.5 cups of flour. If you want to make half the recipe, how many cups of flour do you need?

Accepted Answer

1.25 cups

Answer

0.5 cups

Answer

2 cups

Question 9

Which number is its own additive inverse?

Accepted Answer

0

Answer

-1

Answer

1

Answer

No number is its own additive inverse.

Question 10

The decimal representation of a/b, where a and b are integers and b ≠ 0, will always be:

Accepted Answer

Either terminating or repeating

Answer

Irrational

Answer

Non-repeating and non-terminating

Answer

Terminating