Rounding & Estimating: Medium Test 3
15 questions · 15 minutes
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Example questions from this paper
A preview of the wording. The answer options and full explanations appear once you begin.
- A theatre has 38 rows of seats with 22 seats in each row. Estimate the total number of seats by rounding each number to the nearest 10.
- A car travels at 68 mph for 4 hours. Estimate the total distance by rounding 68 to the nearest 10.
- Estimate 297 × 4 by rounding 297 to the nearest 100.
- Estimate 4.8 × 9.2 by rounding each number to the nearest whole number.
- A shop orders 312 boxes of pens, each containing 48 pens. Estimate the total number of pens by rounding each to 1 significant figure.
Before you begin, remember
- 5 or more rounds up, 4 or less rounds down. Watch for 9s: rounding 3,297 to the nearest ten gives 3,300, not 3,290.
- In an estimation question, round every number first and only then calculate. Working it out exactly and rounding at the end wastes the time the question is trying to save you.