CAEC Mathematics without a Calculator 2

Question 1

What is 15% of 80?

Accepted Answer

12

Answer

15% of 80 = 0.15 × 80 = 12. Or: 10% of 80 = 8; 5% of 80 = 4; total = 12.

Question 2

Simplify the fraction 18/24.

Accepted Answer

3/4

Answer

The GCF of 18 and 24 is 6. 18 ÷ 6 = 3; 24 ÷ 6 = 4. So 18/24 = 3/4.

Question 3

What is 3/4 + 2/3?

Accepted Answer

17/12

Answer

Convert to a common denominator of 12: 3/4 = 9/12 and 2/3 = 8/12. Sum = 17/12.

Question 4

Which of the following is the correct order from least to greatest: 0.3, 1/4, 0.35, 2/5?

Accepted Answer

1/4, 0.3, 0.35, 2/5

Answer

Convert all to decimals: 1/4=0.25, 0.3, 0.35, 2/5=0.40. Order: 0.25, 0.30, 0.35, 0.40 → 1/4, 0.3, 0.35, 2/5.

Question 5

A number increased by 40% gives 84. What is the original number?

Accepted Answer

60

Answer

If x × 1.40 = 84, then x = 84 ÷ 1.40 = 60.

(CAEC) Canadian Adult Education Credential Practice Test