Year 3
Understanding multiplication can be completed in any order
Year 3
Understanding multiplication can be completed in any order
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Lesson details
Key learning points
- In this lesson, we will introduce the term 'communtativity', and study the properties and laws of multiplication. We will use arrays to prove that multiplication is commutative.
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5 Questions
Q1.
What does this array show?
3 x 1
4 x 2
4 x 4
Q2.
What does this array show?
30
4 x 7
7 x 7
Q3.
Arrays help us...
answer subtraction questions
draw circles
Q4.
What is the answer this array is showing?
3
37
9
Q5.
4 x 11 = (Draw an array to help if you would like)
14
40
48
5 Questions
Q1.
Commutativity means...
It's too hard to answer
subtraction
Q2.
4 x 5 has exactly same answer as
2 x 5
40 x 5
5 x 5
Q3.
48 is the answer to 4 x 12 and
12 x 2
2 x 12
4 x 10
Q4.
5 x 9 and 9 x 5 =
40
50
55
Q5.
4 people each buy 8 new pens. How many pens were bought in total?
30
4
8