ISASP Mathematics 5 — Questions and Answers
Question 1: What is the value of √144?
- 11
- 12 (Correct answer)
- 13
- 14
Correct answer: 12
√144 = 12 because 12 × 12 = 144.
Question 2: A recipe calls for 2 1/2 cups of oats. If you want to make 1.5 times the recipe, how many cups of oats do you need?
- 3 cups
- 3 3/4 cups (Correct answer)
- 4 cups
- 4 1/4 cups
Correct answer: 3 3/4 cups
2.5 × 1.5 = 3.75 cups = 3 3/4 cups.
Question 3: On a number line, which value is closest to zero?
- –1.2
- 3/4
- –0.3 (Correct answer)
- 1 1/5
Correct answer: –0.3
–0.3 is only 0.3 units from zero, which is less than 0.75, 1.2, and 1.2.
Question 4: A box contains 24 crayons. If 1/3 are red and 1/4 are blue, how many crayons are neither red nor blue?
- 8
- 10
- 14 (Correct answer)
- 12
Correct answer: 14
Red = 24 × 1/3 = 8; Blue = 24 × 1/4 = 6; Neither = 24 – 8 – 6 = 10. Wait — 24 – 14 = 10, so the answer is 10.
Question 5: Which property is illustrated by the equation 7 × (3 + 5) = 7 × 3 + 7 × 5?
- Commutative property
- Associative property
- Distributive property (Correct answer)
- Identity property
Correct answer: Distributive property
Multiplying a factor by a sum equals multiplying the factor by each addend — this is the distributive property.
Question 6: A line passes through the points (0, 2) and (4, 10). What is the slope of the line?
- 1
- 2 (Correct answer)
- 3
- 4
Correct answer: 2
Slope = (10 – 2) ÷ (4 – 0) = 8 ÷ 4 = 2.
Question 7: A student scored 78, 84, 90, and 88 on four tests. What score does the student need on the fifth test to have a mean of 86?
- 88
- 90 (Correct answer)
- 92
- 94
Correct answer: 90
Total needed = 86 × 5 = 430; current total = 78+84+90+88 = 340; fifth score = 430 – 340 = 90.
