Percents: Ballparking Percents
22% of 1991 is closest to what integer?
Correct.
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When you ballpark, you get
> $$22\% \times 2{,}000$$
> $$ = 20\% \times 2{,}000 + 2\% \times 2{,}000$$
> $$ = 400 + 40$$
> $$= 440$$
22% of 1991 should be slightly less than 440. Thus, 438 is correct.
Incorrect.
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Incorrect.
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Incorrect.
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423
431
438
445
