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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 one column.
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.
My equation is 4586 + 4815 = ... which is the best estimate to make before I calculate my answer?
4000 + 4000 = 8000
4500 + 4800 = 9300
Q2.
My equation is 5592 + 1564 = ... which is the best estimate to make before I calculate my answer?
5000 + 2000 = 7000
6000 + 1000 = 7000
Q3.
From the following equations, which equation requires regrouping in TWO columns?
2472 + 3361
4408 + 3701
Q4.
From the following equations, which equation requires regrouping in the tens and hundreds column?
2631 + 5643
4408 + 3701
Q5.
One of the digits in this column addition is missing, what is the missing digit?
0
3
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