Year 3
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Lesson details
Key learning points
- In this lesson, we will explore the commutative law in multiplication. We will investigate how partitioning a number in multiplication can help us compare two multiplication calculations and see if they have the same product.
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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.
What is 22 x 4?
66
80
Q2.
What is the missing word? If there are ten or more ones, we must ______________ the ones into tens and ones.
partition
recombine
Q3.
Do you need to regroup ones into tens when calculating 11 x 7?
Yes
Q4.
Do you need to regroup tens when calculating 43 x 4?
No
Q5.
What do you need to regroup when calculating 45 x 5?
Ones
Tens
5 Questions
Q1.
What is the Commutative Law?
A maths law - the order of addends and factor cannot be changed.
Q2.
6 x 4 has the same product as 4 x 6.
False
Q3.
12 x 4 has the same product as 2 x 14.
True
Q4.
Which of the following options is incorrect?
15 x 4 = 4 x 15
3 x 13 = 13 x 3
50 x 2 = 2 x 50
Q5.
Which of the following options is incorrect?
19 x 4 = 4 x 19
20 x 6 = 6 x 20
28 x 3 = 3 x 28