ALEX Classroom Resources

   View Standards     Standard(s): [MA2019] (3) 10 :

10. Identify the nearest 10 or 100 when rounding whole numbers, using place value understanding.

[MA2019] (4) 9 :

9. Round multi-digit whole numbers to any place using place value understanding.

Discover how rounding off numbers helps you estimate faster. Round the numbers and make an estimation about their totals in this interactive Cyberchase activity.

   View Standards     Standard(s): [MA2019] (3) 8 :

8. Determine and justify solutions for two-step word problems using the four operations and write an equation with a letter standing for the unknown quantity. Determine reasonableness of answers using number sense, context, mental computation, and estimation strategies including rounding.

[MA2019] (4) 3 :

3. Determine and justify solutions for multi-step word problems, including problems where remainders must be interpreted.

a. Write equations to show solutions for multi-step word problems with a letter standing for the unknown quantity.

b. Determine reasonableness of answers for multi-step word problems, using mental computation and estimation strategies including rounding.

[MA2019] (4) 9 :

9. Round multi-digit whole numbers to any place using place value understanding.

In this interactive activity, students will be led through steps to estimate numbers by rounding in order to make problems easier to solve. There are teaching activities as well as practice activities available. A handout that reviews the strategies taught during the activity can be printed. After utilizing this resource, the students can complete the short quiz to assess their understanding.