Wide Range Achievement Test Wide Range Achievement Math Computation Subtest 4

Question 1

What is the least common multiple (LCM) of 12 and 18?

Accepted Answer

36

Answer

The LCM of 12 and 18 is 36, the smallest number divisible by both.

Question 2

Solve: −4(x − 5) = 28

Accepted Answer

x = −2

Answer

Distribute: −4x + 20 = 28; subtract 20: −4x = 8; divide: x = −2.

Question 3

What is 2 5/6 + 1 3/4?

Accepted Answer

4 7/12

Answer

Convert to improper fractions or find LCD 12: 2 10/12 + 1 9/12 = 3 19/12 = 4 7/12.

Question 4

If 30% of a number is 45, what is the number?

Accepted Answer

150

Answer

0.30 × n = 45; dividing both sides by 0.30 gives n = 150.

Question 5

What is the product of −7 and −9?

Accepted Answer

63

Answer

A negative times a negative is positive: (−7)(−9) = 63.

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