GED Math Practice Questions Set 1

Published by Admin on August 18, 2025

GED Math

1. A rectangle has a length of 12 cm and a width of 5 cm. What is the perimeter?

Answer: B. 34 cm

Explanation: Perimeter = 2 × (length + width) = 2 × (12 + 5) = 34 cm.

2. If 3x + 5 = 20, what is the value of x?

Answer: A. 5

Explanation: Subtract 5 from both sides: 3x = 15 → x = 5.

3. What is 25% of 80?

Answer: B. 20

Explanation: 25% of 80 = 0.25 × 80 = 20.

4. Solve for y: 2y – 7 = 15.

Answer: B. 11

Explanation: Add 7 to both sides: 2y = 22 → y = 11.

5. What is the area of a circle with a radius of 3 cm? (Use π ≈ 3.14)

Answer: C. 28.26 cm²

Explanation: Area = πr² = 3.14 × 3² = 28.26 cm².