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# Guess and Check, Work Backward

## Solve story problems using estimation and evaluation

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.
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## Guess and Check, Work Backward

by CK-12 //basic
Learn how to solve problems using guess and check and by working backward.
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• Video

## Word Problem Solving Plan 1

by CK-12 //basic
Walks through some examples of word problems. Learn how to devise a plan for solving word problems.
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## Problem Solving Word Problems 2

by CK-12 //basic
Shows how to solve word problems with rates.
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