# Finding Percentages without a Calculator

Students learn how to calculate a percentage of an amount  using either 10% or working with equivalent fractions.  As learning progresses students move on to calculate decimal percentages such as 33.33% or 12.5%.The start of the lesson recaps converting between percentages and simplified fractions.  The plenary challenges students to interpret a pie chart where the proportions are given as a percentage.
##### Differentiated Learning Objectives
• All students should be able to calculate a percentage of an amount using 10%.
• Most students should be able to calculate a percentage of an amount using equivalent fractions.
• Some students should be able to calculate a percentage of an amount without a calculator.

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