Subtraction practice

Large-number subtraction

Practice vertical subtraction with four-, five-, or six-digit values while maintaining alignment across long place-value columns.

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Align every place, estimate the difference, subtract from right to left, and compare the exact result with the estimate.

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Student worksheet Worksheet with answers

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Learning objective

What this activity builds

Subtract large whole numbers accurately and judge whether the result is reasonable by estimation.

Worked example

What is 654,321 − 123,456?

530,865

Regroup where a lower digit cannot subtract the digit beneath it, then verify that about 654,000 − 123,000 is about 531,000.

Teaching notes

Make the practice count

Use commas only as place-value separators, not as calculation boundaries.
Have learners read the completed difference aloud to catch missing places.

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Related activities

Subtraction

Multi-digit subtraction

Subtract two-, three-, or four-digit numbers vertically with configurable regrouping and subtraction across zero.

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