Year 3

Deriving New Facts From Number Bonds (Part 2)

Year 3

Deriving New Facts From Number Bonds (Part 2)

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Lesson details

Key learning points

  1. In this lesson, we will look at the properties of addition and subtraction, including the law of commutativity. We will revisit place value and consider addition and subtraction as inverse operations.

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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.
45 < 46, True or False?
False
Correct answer: True
Q2.
34 > 38, True or False?
Correct answer: False
True
Q3.
Which number sequence is correct? (Select 1)
4 < 6 < 3 < 2 < 1
Correct answer: 6 > 4 > 2 > 1
Q4.
67 = 76, True or False?
Correct answer: False
True
Q5.
Which number sequence is correct? (Select 1)
21 < 12 < 32 < 31
21 = 32 = 31
31 > 32 > 23> 31
Correct answer: 45 < 46 < 47 < 49

5 Questions

Q1.
If I know that 6 + 2 = 8, then I know
16 + 2 = 8
Correct answer: 8 - 6 = 2
8 + 2 = 6
Q2.
6 + 2 = 8 - Which equation shows 'one more'
16 + 2 = 18
5 + 2 = 7
60 + 20 = 80
Correct answer: 7 + 2 = 9
Q3.
6 + 2 = 8 - Which equation shows commutativity?
16 + 2 = 8
Correct answer: 2 + 6 = 8
8 - 2 = 6
8 - 6 = 2
Q4.
6 + 2 = 8 - Which equation shows the inverse
16 + 2 = 18
60 + 20 = 80
Correct answer: 8- 2 = 6
Q5.
6 + 2 = 8 - Which equation shows changing the tens place value?
16 + 2 = 8
16 + 2= 18
60 + 2 = 80
Correct answer: 60 + 20 = 80