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Lesson 6 - Estimating Sums and DifferencesTo encourage students to have fun on the Web while learning about Estimating Sums and Differences, here are some games and interactive activities they can do on their own or in pairs.
GoalEstimate sums and differences of 2-digit numbers.
Builds UponStudent Book pages 98-99 Instructions for UseEstimate the Sum of 2 Numbers lets students estimate the sum of 2 numbers. To use Estimate the Sum of 2 Numbers, click the 'Start Addition' button and read the equation in the text fields. Have students click the button to indicate if students have the correct answer.
Estimating Differences lets students estimate the difference of 2 numbers. To use Estimating Differences, click the 'Start Subtraction' button and read the equation in the text fields. Have students click the button to indicate if students have the correct answer.
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