Numerical Estimation and Approximation Flashcards

6 cards from real CAAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Numerical Estimation and Approximation flashcards as text

Which is the best estimate for 67 ÷ 4?
Answer: 17
68 ÷ 4 = 17, so 67 ÷ 4 is approximately 17.
What is approximately 13% of 780?
Answer: 100
13% of 780 is close to 13% of 800 = 104, but rounding gives approximately 100.
Estimate the value of 4.9 × 6.1.
Answer: 30
Rounding 4.9 to 5 and 6.1 to 6 gives 5 × 6 = 30.
What is the closest estimate for 1,005 − 497?
Answer: 500
Rounding to 1,000 − 500 = 500.
A worker earns $14.75 per hour. Estimate earnings for 38 hours.
Answer: $600
Rounding $14.75 to $15 and 38 to 40 gives $15 × 40 = $600.
Approximately how many 7s fit into 490?
Answer: 70
490 ÷ 7 = 70 exactly.