# Subtracting using the column method, when multiple columns require regrouping

# Subtracting using the column method, when multiple columns require regrouping

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## Lesson details

### Key learning points

- In this lesson, we will use the column method to subtract two four digit numbers where regrouping is required in multiple columns.

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This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

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### 5 Questions

Q1.

For the following equation: 5762 - 4031 = ... which is the most appropriate estimate?

5000 - 4000 = 1000

5700 - 4000 = 1700

Q2.

For the following equation: 8371 - 6124 = ... which is the most appropriate estimate?

8400 - 6100 = 2300

9000 - 6000 = 3000

Q3.

In the following equation: 8624 - 3711 = ... which column requires regrouping?

Ones

Tens

Q4.

In the following equation: 6744 - 2481 = ... which column requires regrouping?

Hundreds

Ones

Q5.

Mrs Crane has made a mistake in the following calculation. What has she done wrong?

Nothing!

She's added instead of subtracted

### 5 Questions

Q1.

Mrs Crane wants to make an estimate before she calculates her equation. Her equation is 3569 - 2407 = ... Which of the following is the best estimate?

3000 - 2000 = 1000

3000 - 3000 = 0

Q2.

Mrs Crane wants to make an estimate before she calculates her equation. Her equation is 3972 - 1963 = ... Which of the following is the best estimate?

3000 - 1000 = 2000

4000 - 1000 = 3000

Q3.

In this equation: 3792 - 1909 = which two columns require regrouping?

Ones and Tens

Tens and Hundreds

Q4.

In this equation: 9764 - 2589 = which two columns require regrouping?

Ones and Hundreds

Tens and Hundreds

Q5.

Some of the digits are missing from the equation below. What are the missing digits?

1 and 4

9 and 5