ISEE Mathematics Achievement 3 — Questions and Answers
Question 1: What is the value of (-4) × (-7)?
- 28 (Correct answer)
- -28
- 11
- -11
Correct answer: 28
A negative times a negative gives a positive product, so 4 × 7 = 28.
Question 2: Simplify the expression 3(2x + 4) - 5x.
- x + 12 (Correct answer)
- 11x + 12
- x + 4
- 6x + 12
Correct answer: x + 12
Distribute to get 6x + 12, then subtract 5x to get x + 12.
Question 3: What is the area of a triangle with base 10 and height 6?
- 30 (Correct answer)
- 60
- 16
- 26
Correct answer: 30
Area = ½ × base × height = ½ × 10 × 6 = 30.
Question 4: Which decimal is equivalent to 7/8?
- 0.875 (Correct answer)
- 0.78
- 0.87
- 0.8
Correct answer: 0.875
7 ÷ 8 = 0.875.
Question 5: If 3 pens cost $1.80, how much do 7 pens cost?
- $4.20 (Correct answer)
- $3.60
- $4.80
- $5.40
Correct answer: $4.20
Each pen costs $0.60, so 7 × $0.60 = $4.20.
Question 6: What is the value of 2^5?
- 32 (Correct answer)
- 10
- 25
- 16
Correct answer: 32
2 × 2 × 2 × 2 × 2 = 32.
Question 7: The ratio of boys to girls in a class is 3:5. If there are 24 students, how many are boys?
- 9 (Correct answer)
- 15
- 12
- 8
Correct answer: 9
The 8 parts total 24, so each part is 3, and boys = 3 × 3 = 9.
ISEE Mathematics Achievement 3
What is the value of (-4) × (-7)?