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Students to show how they estimate in some addition problems.

This task requires students to estimate some addition problems using any appropriate method.

Students estimate an addition problem, share their methods, discuss the rounding method, and then do more problems using rounding.

This task requires students to estimate some addition problems using any appropriate method.

Students estimate an addition problem, share their methods, discuss the front-end method and then do more problems using front-end.

Students estimate an addition problem, share their methods, discuss grouping nice numbers, and then do a problem using this method, then design a question showing how it uses the method.

Students estimate an addition problem, share their methods, discuss the averaging method, and then do more problems using averaging.

This task requires students to estimate some addition problems using any appropriate method.

Students estimate the sum of a number of fractions.

Students decide which children are estimating and which are not, and explain their reasoning.

In this task students decide which people are estimating and which are not, and explain their reasoning.

This practical task involves students making best estimates of sets of items and clearly demonstrating their method(s) of estimation.