West B Test Mathematics 5

Question 1

A recipe requires 2¼ cups of flour. If you want to make 1.5 times the recipe, how many cups do you need?

Accepted Answer

3⅜ cups

Answer

2¼ = 2.25; 2.25 × 1.5 = 3.375 = 3⅜ cups.

Question 2

Which of the following represents 4.2 × 10³ in standard notation?

Accepted Answer

4,200

Answer

10³ = 1,000, so 4.2 × 1,000 = 4,200.

Question 3

The mean of five test scores is 78. Four of the scores are 70, 82, 75, and 85. What is the fifth score?

Accepted Answer

78

Answer

Sum = 78 × 5 = 390; fifth score = 390 − (70+82+75+85) = 390 − 312 = 78.

Question 4

A cylinder has a radius of 3 cm and a height of 10 cm. What is its volume? (Use π ≈ 3.14)

Accepted Answer

282.6 cm³

Answer

V = πr²h = 3.14 × 9 × 10 = 282.6 cm³.

Question 5

Which of the following is equivalent to (−2)³?

Accepted Answer

−8

Answer

(−2)³ = (−2) × (−2) × (−2) = 4 × (−2) = −8.

West B Test Practice Test