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Finding a percent of a power of 10in your head

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O

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1

What is 16% of 100?

1

16Home

2

What is 5% of ten gallons?

2

One-half gallonHome

3

Three percent of 1,000 manufactured light bulbs are defective. How many is this?

3

30 light bulbsHome

4

How many of 10,000 total votes are needed to receive 51% of the vote?

4

5,100 votesHome

5

I invested $1,000 in a mutual fund. I have earned 29% in interest. How much is this?

5

$290 Home

6

Only 65% of 100 hotdogs were eaten during the school picnic. How many is this?

6

65 hotdogsHome

7

34% of 1,000 is how many?

7

340Home

8

In a city of 100,000 people, 53% of them are males. How many males is this?

8

53,000Home

9

My 10 foot long python has grown 15% in the last year. How much is this?

9

1.5 feetHome