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Surf for More Math

Lesson 2 - Estimating Products


Use these Web pages to encourage students to have fun on the Web while learning about estimating products. Students can try these activities on their own or in pairs.


Solve two-step problems and use estimation to check the reasonableness of a calculation.

Builds Upon

Student Book pages 160-161


Instructions for Use

Estimating Products helps students learn about estimating to calculate a reasonable answer.

To use Estimating Products, read through the Web page to learn about ways to estimate products.


Practice Estimating Products lets students practice using estimation to round to the greatest place value.

To use Practice Estimating Products, read through the Web page and answer the questions using pencil and paper. To check an answer, click on the "Answer" box. The answer will appear in the drop-down menu. To see an explanation of the answer, click the "Explanation" text box. An explanation will appear in the drop down menu.