ISEE Mathematics Achievement 2 — Questions and Answers
Question 1: What is the value of 3/4 + 2/5?
- 23/20 (Correct answer)
- 5/9
- 6/20
- 1/2
Correct answer: 23/20
Using a common denominator of 20: 15/20 + 8/20 = 23/20.
Question 2: If 5x - 3 = 22, what is the value of x?
- 5 (Correct answer)
- 4
- 6
- 3.8
Correct answer: 5
Add 3 to get 5x = 25, then divide by 5 to get x = 5.
Question 3: What is 15% of 240?
- 36 (Correct answer)
- 24
- 40
- 30
Correct answer: 36
0.15 × 240 = 36.
Question 4: A rectangle has length 9 cm and width 4 cm. What is its perimeter?
- 26 cm (Correct answer)
- 36 cm
- 13 cm
- 22 cm
Correct answer: 26 cm
Perimeter = 2(9 + 4) = 2 × 13 = 26 cm.
Question 5: Which number is a prime number?
- 29 (Correct answer)
- 21
- 27
- 33
Correct answer: 29
29 has only 1 and itself as factors, while the others are divisible by 3.
Question 6: What is the least common multiple of 6 and 8?
- 24 (Correct answer)
- 48
- 12
- 16
Correct answer: 24
Multiples of 6 and 8 first coincide at 24.
Question 7: If a car travels 180 miles in 3 hours, what is its average speed?
- 60 mph (Correct answer)
- 54 mph
- 45 mph
- 90 mph
Correct answer: 60 mph
Speed = distance ÷ time = 180 ÷ 3 = 60 mph.
ISEE Mathematics Achievement 2
What is the value of 3/4 + 2/5?