# Calculating Percentages Worksheet (in 2 Steps)

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You can calculate percentages by using “easy” percentages and then multiply or divide to find the “harder” percentage. The example below shows these two steps.

 What is 30% of \$40? Step 1 What is 10% of \$40? 10% of \$40 = \$40 ÷ 10 = \$4 10% is a relatively easy percentage to find. It is the equivalent to one-tenth, or the same as dividing by 10. To divide by 10 we move the decimal point one place to the left. Step 2 3 x \$4 = \$12 30% of \$40 = \$12 30% is 3 times ( 3 x) 10% so we multiply what 10% of \$40 is by 3

Use the above steps to calculate the percentages fill in the blanks in the tables below. The first table is completed for you.

 10% 30% \$10 \$1 \$3 \$20 \$2 \$6 \$40 \$4 \$12
 10% 40% \$50 \$5 \$20 \$70 \$7 \$28 \$90 \$9 \$36
 10% 70% \$40 \$4 \$28 \$80 \$8 \$56 \$200 \$20 \$140
 10% 90% \$10 \$1 \$9 \$20 \$2 \$18 \$40 \$4 \$36
 10% 20% \$5 \$0.50 \$1 \$4 \$0.40 \$0.80 \$8 \$0.80 \$1.60
 10% 60% \$100 \$10 \$60 \$200 \$20 \$120 \$50 \$5 \$30

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Use the same two step procedure to calculate the percentages and complete the tables below. Note, to find 1% you divide by 100. The first table is completed for you.

 1% 5% \$100 \$1 \$5 \$300 \$3 \$15 \$400 \$4 \$20
 1% 5% \$600 \$6 \$30 \$500 \$5 \$25 \$200 \$2 \$10
 1% 2% \$800 \$8 \$16 \$600 \$6 \$12 \$1200 \$12 \$24
 1% 2% \$100 \$1 \$2 \$80 \$0.80 \$1.60 \$10 \$0.10 \$0.20
 1% 0.5% \$1000 \$10 \$5 \$800 \$8 \$4 \$150 \$1.50 \$0.75
 1% 3% \$100 \$1 \$3 \$150 \$1.50 \$4.50 \$200 \$2 \$6
 1% 8% \$50 \$0.50 \$4 \$60 \$0.60 \$4.80 \$70 \$0.70 \$5.60
 1% 6% \$120 \$1.20 \$7.20 \$70 \$0.70 \$4.20 \$40 \$0.40 \$2.40
 1% 0.1% \$1000 \$10 \$1 \$2500 \$25 \$2.50 \$5000 \$50 \$5

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## Related Resources

The various resources listed below are aligned to the same standard, (7RP03) taken from the CCSM (Common Core Standards For Mathematics) as the Percentages Worksheet shown above.

Use proportional relationships to solve multistep ratio and percent problems. Examples: simple interest, tax, markups and markdowns, gratuities and commissions, fees, percent increase and decrease, percent error.

### Worksheet

Similar to the above listing, the resources below are aligned to related standards in the Common Core For Mathematics that together support the following learning outcome:

Analyze proportional relationships and use them to solve real-world and mathematical problems