West B Test Math: Number Sense and Operations 2

Question 1

Which of the following is an irrational number?

Accepted Answer

√7

Answer

√7 cannot be expressed as a ratio of integers and has a non-repeating, non-terminating decimal expansion.

Question 2

What is the value of 3² + 4²?

Accepted Answer

25

Answer

3² = 9 and 4² = 16, so 9 + 16 = 25.

Question 3

A store sells apples in bags of 6 and oranges in bags of 9. What is the least number of fruit you must buy to have equal numbers of each?

Accepted Answer

18

Answer

The LCM of 6 and 9 is 18, so you need 18 of each fruit.

Question 4

Which expression is equivalent to 2⁻³?

Accepted Answer

1/8

Answer

A negative exponent means take the reciprocal: 2⁻³ = 1/2³ = 1/8.

Question 5

Order from least to greatest: 0.6, 2/3, 5/8

Accepted Answer

5/8, 0.6, 2/3

Answer

Converting to decimals: 5/8=0.625, 0.6=0.600, 2/3≈0.667, so the order is 5/8, 0.6, 2/3.

West B Test Practice Test