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R2 Quickly Finding Percents Worksheet
Contributed by: Cason

1)  To quickly find 10% of 300 we can move the decimal

 

_______ place(s) left because 10% equals 0.1.  The

 

answer is _____.

 one
 two

2)  To find 20%, we may divide by 5 because 20% equals

 

 

the fraction                 or we may find 10% first and

 

 

               it.  The answer for 20% of 300 is          .

3)  To quickly find 1% of 300 we can move the decimal

 

 

two places                    because 1% equals 0        .

 

 

The answer is       .

left
right

4)  To find 5% of 300 we can multiply 300 times 0.05 or

 

 

find 10% first and divide by       as 5% is one-half of 10%.

5)  Since 25% equals the fraction                , we can

 

 

 

multiply by it or divide by its reciprocal 4. 

 

 

25% of 300 is        .

6) Since 25% times three is 75%, to find 75% find 25%

 

 

and multiply it by       .  75% of 300 is           .

7)  33 ⅓%  is equal to the decimal  0           and the

 

 

fraction               .  The simple way to find 33 ⅓% of 300

 

 

is to divide it by the reciprocal of the fraction.  The

 

 

answer is         .

8)  Since 33 ⅓% doubled is 66  ⅔%, find 33 ⅓% first

 

 

and then               it.  66 ⅔% of 300 is          .

9)  Since 50% equals ½, divide by ½'s reciprocal 2 to

 

 

find 50% of 300.  The answer is         .

10)  The easy way to find 200% of 300 is to              it.

 

 

The answer is         .

Bonus:  To quickly find 30%, we could multiply by 0.3

 

 

as 30% equals the decimal 0.3  OR  we could find 10%

 

 

first and then multiply by 3.

 

 

What is 30% of 80?

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