Practice Estimation in Math
Use these practice problems to test your method after reviewing the concept explanation and worked examples.
Quick Recap
Finding a quick approximate answer by rounding to convenient values and computing mentally—no exact calculation needed.
Quick mental math to get 'close enough'—is closer to 2000 or 3000?
Showing a random 20 of 50 problems.
Example 1
mediumEstimate of 80.
Example 2
easyEstimate to the nearest whole number.
Example 3
mediumEstimate .
Example 4
mediumEstimate to one decimal place.
Example 5
challengeA jar holds about 240 marbles per liter. A 3.2-liter jar is about full. Estimate the number of marbles.
Example 6
challengeEstimate and explain why your estimate is close.
Example 7
hardA book has 318 pages. If you read about 28 pages a day, estimate how many days to finish.
Example 8
mediumA stadium has 38 rows of 52 seats. Estimate the total.
Example 9
easyEstimate .
Example 10
mediumA box holds 24 cans. Estimate how many cans are in 19 boxes.
Example 11
easyEstimate to the nearest whole number.
Example 12
easyEstimate without a calculator.
Example 13
mediumEstimate to the nearest whole number.
Example 14
mediumEstimate using one friendly product.
Example 15
hardA school has 412 students. About play a sport. Estimate the number of athletes.
Example 16
mediumEstimate to one decimal place.
Example 17
mediumEstimate to the nearest half.
Example 18
hardEstimate .
Example 19
hardEstimate to one decimal place.
Example 20
challengeA trip is 287 miles at about 58 mph. Estimate the hours and justify.