Chapter 7 Percent Worksheet With Answers Page 39
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477.4 Estimation with Percent
2. Estimate answers to percent problems involving 50%,
25%, 5% and 15%
(quick
answers)
50% of a number = the number ÷ 2
•
25% of a number = the number ÷ 4
•
5% of a number = (10% of the number) ÷ 2
•
•
15% of a number = 10% of the number + 5% of the number
3,000,000
e.g.4 estimate the answer: what is 50% of 5,811,249?
e.g.5 estimate the answer: what is 25% of 11.47?
3
e.g.6 estimate 5% of 8,350? 400 (or 420)
400 (or 420)
e.g.7 estimate 15% of $38.6? $6
$6
39
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