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Four-Digit Subtraction Regrouping

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Four-Digit Subtraction Regrouping

Use place value and regrouping to subtract four-digit numbers. Estimate first, then check whether your answer is sensible.

Thousands (1,000)

Hundreds (100)

Tens (10)

Ones (1)

1 thousand = 10 hundreds

1 hundred = 10 tens

1 ten = 10 ones

Regroup only as needed

Estimate, then subtract

Round each number to the nearest hundred to make an estimate. Then work out the exact difference.

1.Work out 6,351 − 2,784. First estimate by rounding both numbers to the nearest hundred.
2.Work out 8,012 − 3,459. First estimate by rounding both numbers to the nearest hundred.
3.Work out 9,004 − 5,678. First estimate by rounding both numbers to the nearest hundred.
4.Work out 7,263 − 4,586. First estimate by rounding both numbers to the nearest hundred.

Subtraction in everyday situations

Write a subtraction calculation for each situation, then find the answer.

5.A community library has 7,624 books. It sends 2,859 books to another library. How many books remain?
6.A local fundraiser hopes to collect $8,400 and has collected $5,675 so far. How much more does it need to reach its target?
7.A cycling route is 6,950 kilometres long. A team has travelled 2,786 kilometres. How many kilometres of the route are left?
8.A wildlife park recorded 8,205 visitors over a long weekend. If 3,768 visited on Saturday, how many visited on the other days combined?
9.Explain why regrouping can be needed when subtracting 5,032 − 1,758. Give one place-value example from this calculation.

2 printable pages

  • Place-value reminder and four four-digit subtraction problems with rounding estimates.

    Page 1

  • Four everyday subtraction word problems and an explanation question about regrouping.

    Page 2

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