CAAT Numerical Estimation and Approximation 2 — Questions and Answers
Question 1: Which is the best estimate for 67 ÷ 4?
- 12
- 15
- 17 (Correct answer)
- 20
Correct answer: 17
68 ÷ 4 = 17, so 67 ÷ 4 is approximately 17.
Question 2: What is approximately 13% of 780?
- 78
- 100 (Correct answer)
- 104
- 130
Correct answer: 100
13% of 780 is close to 13% of 800 = 104, but rounding gives approximately 100.
Question 3: Estimate the value of 4.9 × 6.1.
- 20
- 25
- 30 (Correct answer)
- 35
Correct answer: 30
Rounding 4.9 to 5 and 6.1 to 6 gives 5 × 6 = 30.
Question 4: What is the closest estimate for 1,005 − 497?
- 400
- 500 (Correct answer)
- 600
- 700
Correct answer: 500
Rounding to 1,000 − 500 = 500.
Question 5: A worker earns $14.75 per hour. Estimate earnings for 38 hours.
- $480
- $560
- $600 (Correct answer)
- $650
Correct answer: $600
Rounding $14.75 to $15 and 38 to 40 gives $15 × 40 = $600.
Question 6: Approximately how many 7s fit into 490?
- 50
- 60
- 70 (Correct answer)
- 80
Correct answer: 70
490 ÷ 7 = 70 exactly.
CAAT Numerical Estimation and Approximation 2
Which is the best estimate for 67 ÷ 4?