Solving Percent Problems

Solving Percent Problems The Percent Proportion: You can use the percent proportion to find the part, whole or percent of any situation. Strategy: 1.) Fill in the mathematical statement to identify what information you have and what you are seeking. 2.) Fill in the percent proportion, cross multiply and solve for the unknown. Example 1: 67% of 90 is what number? Step 1: ____% of _____ is _____. Step 2: =

Solving Percent Problems The Percent Proportion: Example 2: What percent of 90 is 22.5? Step 1: ____% of _____ is _____. Step 2: = Strategy: 1.) Fill in the mathematical statement to identify what information you have and what you are seeking. 2.) Fill in the percent proportion, cross multiply and solve for the unknown.

Solving Percent Problems The Percent Proportion: Example 3: 12 is 8% of what number? Step 1: ____% of _____ is _____. Step 2: = Strategy: 1.) Fill in the mathematical statement to identify what information you have and what you are seeking. 2.) Fill in the percent proportion, cross multiply and solve for the unknown.

Solving Percent Problems Try these: 1.) 220% of 24 is what number? 2.) What percent of 40 is 25? Step 1: ____% of _____ is _____. Step 1: ____% of _____ is _____. Step 2: Step 2:

Solving Percent Problems Try these: 3.) 35 is 28% of what number? 4.) 90% of 80 is what number? Step 1: ____% of _____ is _____. Step 1: ____% of _____ is _____. Step 2: = Step 2: =

Solving Percent Problems Real-Life Application Saud bought a t-shirt with a retail sales price of $15 and paid $0.99 sales tax. What is the sales tax rate that Saud paid on the t-shirt? Note: sales tax rates are percentages. Step 1: ____% of _____ is _____. Step 2:

Solving Percent Problems Real-Life Application Earth’s total land area is about 57,308,738 mi2 .The land area of Asia is about 30% of this total. What is the approximate land area of Asia to the nearest square mile? Step 1: ____% of _____ is _____. Step 2:

Solving Percent Problems Real-Life Application There are 360 students at York Middle School. How many of them have cheese as a snack? Step 1: ____% of _____ is _____. Step 2: