Year 3
Year 3
Subtracting multiples of 10 from 3-digit numbers
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Lesson details
Key learning points
- In this lesson, we will use known number facts in order to mentally subtract multiples of 10 from 3-digit numbers. We will look at partitioning strategies and analyse place value to make mental subtraction more efficient.
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.
Which one of these is a 3 digit number?
19
34
78
Q2.
674 + 20 =
1000
664
684
Q3.
654 + 30 = 694 True or false?
True
Q4.
520 + 80 =
580
700
800
Q5.
666 + 50 =
1000
675
676
5 Questions
Q1.
When we subtract the number we started with gets...
bigger
Q2.
356 - 40 = 326 True or false?
True
Q3.
673 - 60 =
623
633
666
Q4.
532 - 40 =
482
502
600
Q5.
300 - 60 =
320
360
440