Number Sense Review Grade 7

Question 1

Which of the following is a NOT a prime number?

Accepted Answer

57

Question 2

If 81 written as a power had a base number of 3, the exponent would be what?

Accepted Answer

4

Question 3

Which number has a square and square root that are the same?

Accepted Answer

1

Question 4

Put these fractions in order from least to greatest: 2/5, 3/6, 1/3, 7/6, 4/5

Accepted Answer

1/3, 2/5, 3/6, 4/5, 7/6

Question 5

A base number + exponent =

Accepted Answer

a power

Question 6

If expanded form is 3 x 3 x 3 x 3 x 3 x 3, what would the exponent be?

Accepted Answer

6

Question 7

The GCF for 12, 24 and 30 is:

Accepted Answer

6

Question 8

If the perimeter of a square garden is 180 metres, what's the area?

Accepted Answer

2025 metres squared

Question 9

Which is a way to represent +6 using integer tiles?

Accepted Answer

4 red tiles and 10 yellow tiles

Question 10

Which of the following is a composite number?

Accepted Answer

9

Question 11

X spent 3/4 of $ on rent and the rest on food. If X spent $200 on food how much $ did X have?

Accepted Answer

$800

Question 12

The LCM for the numbers 6, 12 and 18 is.

Accepted Answer

36

Question 13

Change the following improper fraction to a proper fraction: 17/9

Accepted Answer

1 whole, 8/9ths

Question 14

What is [(3 to the power of 3) to the power of 3]?

Accepted Answer

531441

Question 15

What's the square root of 121?

Accepted Answer

11

Question 16

If a square room has an area of 900 square metres, what would be its perimeter?

Accepted Answer

120 m

Question 17

Put these decimals in order from least to greatest: 12.3, 12.03, 1.23, 123.0, 12.32, 12.312

Accepted Answer

1.23, 12.03, 12.3, 12.312, 12.32, 123.0

Question 18

Change the following mixed number to an improper fraction: 4 and 5/9ths

Accepted Answer

41/9

Question 19

An elevator's on the 20th floor. It goes down 11 floors then up 5 floors. What floor's it on?

Accepted Answer

14

Question 20

In powers of 10, the exponent tells us what?

Accepted Answer

All of the above.

Questions 20