AMC 8 Fractions, Decimals & Percents 2

Question 1

Which correctly orders 3/5, 7/10, and 0.65 from least to greatest?

Accepted Answer

3/5, 0.65, 7/10

Answer

Converting to decimals: 3/5 = 0.60, 0.65, 7/10 = 0.70, so the order is 3/5 < 0.65 < 7/10.

Question 2

A shirt costs $30 after a 25% discount. What was the original price?

Accepted Answer

$40.00

Answer

The sale price is 75% of the original, so original = $30 ÷ 0.75 = $40.

Question 3

What is (1/2) × (3/4) × (4/5)?

Accepted Answer

3/10

Answer

(1 × 3 × 4) / (2 × 4 × 5) = 12/40 = 3/10.

Question 4

What is 3.6 ÷ 0.4?

Accepted Answer

9

Answer

3.6 ÷ 0.4 = 36 ÷ 4 = 9.

Question 5

A student scored 18 out of 24 on a test. What percentage did they score?

Accepted Answer

75%

Answer

18/24 = 3/4 = 75%.

AMC 8 - American Mathematics Competition 8 Practice Test