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.
Licence
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