Estimate First, Then Check Your Answer
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Estimate First, Then Check Your Answer
Checking an answer by estimating, Grades 4 and 5: four two-step word problems, one with money, to estimate by rounding, work out exactly, and use to judge whether a classmate’s answer is reasonable. With an answer key.
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- 1
- Last updated
- Time
- About 20 minutes
- Answer key
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- Related curriculum
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Solve word problems with two or more steps and all four operations, write an equation with a letter for the unknown, and check the answer with estimation; remainders are explained.
Reviewed by Mrs. Catherine Reynolds, Teacher. How we check worksheets
How to use this sheet
- Have the child write the hidden question first: what must you know before you can answer?
- Draw a bar model for each step and label the parts.
- For problems with a remainder, ask what the remainder means in the story before writing the answer.
Common mistakes
- Stopping after the first step and giving that as the answer. Read the question again.
- Ignoring the remainder or rounding the wrong way, such as needing 7.5 buses. You cannot have half a bus: you need 8.
- Doing the steps in the wrong order. Retell the story in order before working it out.
