Year 4
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Lesson details
Key learning points
- In this lesson, we will derive addition and subtraction facts by using part whole models to show how related facts can be derived from scaling up by 10, 100 or 1000.
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.
If I know 3 + 3 = 6, then I know...
30 + 10 = 40
40 + 60 = 100
Q2.
If I know 3 + 5 = 8, then I know...
300 + 400 = 700
600 + 200 = 800
Q3.
What's the missing part in the following equation: 220 + ___ = 550
110
440
Q4.
What's the missing part in the following equation: 110 + ___ = 660
440
530
Q5.
Here are three derived facts, based on the fact 3 + 5 = 8. Which is incorrect?
30 + 50 = 80
3000 + 5000 = 8000