Education Technology

Number Representations

Published on 07/23/2010

Activity Overview

In this activity, students will explore the relationship between fractions, decimals, and percents. They will learn to use the calculator to convert between the different representations and then order them from least to greatest on a number line. Students will also work with tables and circle graphs.

Key Steps

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    Students can convert a decimal to a percent by multiplying the decimal by 100.  They need to enter the decimal into the calculator, with or without the leading zero, multiply by 100 and then press enter. The screenshot to the right shows how 0.23 is converted to 23%.

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    Discuss with students about how they can convert a fraction to a percent. They will need to combine two of the steps used in this first problem; converting first to a decimal and then multiplying the decimal by 100. 

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    Students explore the relationship between mixed numbers, decimals, and percents. They can enter a mixed number into the calculator by typing in the whole number, pressing "Unit," typing the numerator, arrow down to the bottom, and typing the denominator.