CAAT Numerical Estimation and Approximation 1

Question 1

Which is the best estimate for 48 × 19?

Accepted Answer

1,000

Answer

Rounding 48 to 50 and 19 to 20 gives 50 × 20 = 1,000.

Question 2

What is the best estimate for 897 ÷ 29?

Accepted Answer

30

Answer

Rounding 897 to 900 and 29 to 30 gives 900 ÷ 30 = 30.

Question 3

Approximately what is 18% of 550?

Accepted Answer

100

Answer

18% is close to 20%, and 20% of 550 = 110, so the best estimate is about 100.

Question 4

Approximately how much is 2,489 + 3,512?

Accepted Answer

6,000

Answer

Rounding to 2,500 + 3,500 = 6,000.

Question 5

Which whole number is closest to the square root of 50?

Accepted Answer

7

Answer

Since 7² = 49 and 8² = 64, the square root of 50 is closest to 7.

CAAT - Canadian Adult Achievement Test Practice Test