Estimating and Checking with Inverse Operations

Year 3 MathsAddition and Subtraction3 pages

About this worksheet

A cloze worksheet on estimating and checking with inverse operations for Year 3 maths. Pupils fill 11 gaps in a short story about Leo rounding a shopping total, with one distractor word in the bank. Two follow-up questions then ask them to define an inverse operation in their own words and say why estimating first helps. Answers included. Matches the England National Curriculum estimating and checking objective.

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Curriculum objectives covered

Number — addition and subtraction

Estimate the answer to a calculation and use inverse operations to check answers

The whole story walks through estimating first, then checking with the inverse.

Number — addition and subtraction

Solve problems, including missing number problems, using number facts, place value, and more complex addition and subtraction

The story is framed as a practical shopping problem.

What's inside this worksheet

Story completion

An 11-gap cloze about estimating a total and checking it, with one distractor in the word bank.

Your Turn

Write a sentence explaining what an inverse operation is, and why estimating first is useful.

Answer key

The correct word sequence plus example answers for both writing questions.

How teachers use it

Introducing checking

Read the story together the first time you teach inverse operations.

Homework

The cloze format needs no equipment and marks quickly against the key.

Plenary

Use the two Your Turn questions as an exit ticket.

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