Year 3
Subtracting 3-digit numbers (regrouping tens to ones)
Year 3
Subtracting 3-digit numbers (regrouping tens to ones)
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Lesson details
Key learning points
- In this lesson, we will build on our knowledge of column addition and introduce regrouping for column subtraction.
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.
True or false, this calculation needs some regrouping? 54 + 23 =
True
Q2.
Which of these calculation needs regrouping?
150 + 140 =
400 + 300 =
567 + 222 =
Q3.
555 + 555 =
1000
1010
600
Q4.
456 + 269 =
610
619
7025
Q5.
Check this answer - is it correct? 596 + 122 = 6118
Yes
5 Questions
Q1.
Regrouping is always needed when...
there is a 6
when you can do it in your head
you are subtracting a 3-digit number
Q2.
Which of these calculations requires regrouping?
319 - 208 =
500 - 200 =
567 - 111 =
Q3.
True or false this questions has been answered correctly? 456 - 147 = 311
True
Q4.
846 - 227 =
500
621
721
Q5.
Has this question been answered correctly? 526 - 309 = 217
Maybe
No