Benchmark Percents

Front

How do you find 10% of a number?

Back

Move the decimal one place to the left

Front

What is 20% of a number?

Back

Find 10% (move decimal 1 place value to the left) and then double it

Front

How do you calculate 5% of a number?

Back

Find 10% of the number and then halve it

Front

What is the method to find 50% of a number?

Back

50% = 1/2

Divide the number by 2

Front

What is the method to find 25% of a number?

Back

25% = 1/4

Divide the number by 4

or

Find 50% (1/2) of the number and then halve it again

Front

How do you calculate 75% of a number?

Back

75% = 3/4

Divide by 4 and then multiply that by 3

Front

How do you calculate 33 1/3% of a number?

Back

33 1/3% = 1/3

Divide the number by 3

Front

How do you find 66 2/3% of a number?

Back

66 2/3% = 2/3

Divide the number by 3 and then double it.

Front

How do you calculate 100% of a number?

Back

100% = 1

Take the whole amount

Front

How do you calculate 150% of a number

Back

150% = 100% + 50%

Take half of the number and then add it to the whole amount