Fraction Test Fraction Estimation and Rounding

Question 1

Which is the best estimate for 4/9 + 3/7?

Accepted Answer

About 1

Answer

4/9 ≈ 1/2 and 3/7 ≈ 1/2, so the sum is approximately 1.

Question 2

Is 7/8 closer to 0, 1/2, or 1?

Accepted Answer

1

Answer

7/8 = 0.875, which is much closer to 1 than to 1/2.

Question 3

Estimate: 11/12 − 1/9 ≈ ?

Accepted Answer

About 3/4

Answer

11/12 ≈ 1 and 1/9 ≈ 0, so the difference is approximately 1; closest reasonable estimate is about 3/4 to 1.

Question 4

A recipe uses about 5/8 cup of milk. You estimate you'll need about how much for 4 batches?

Accepted Answer

About 2 1/2 cups

Answer

5/8 ≈ 1/2; 4 × 1/2 = 2, so a close estimate is 2 1/2 cups.

Question 5

Which fraction is approximately equal to 0.33?

Accepted Answer

1/3

Answer

1/3 ≈ 0.333, which is the closest to 0.33.

Fraction Test Practice Test