___________
Maths
Multiply 3 or more numbers (commutative and associative laws)
Starter quiz
Try it
Give to class
What is the product of 7 and 9?
'63' ✓
What does the number 6 represent in the image below? 3 × 2 × 6
The number of rows.
The number of columns.
The number of trays. ✓
What is the missing number in the expression? 4 ×
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× 2 Use the image to help.
'3' ✓
Look at the equation. Which two numbers would you multiply together first? 2 × (7 × 4)
4 and 2
7 and 4 ✓
7 and 2
Which equations could you use to work out the total number of cubes?
4 × (5 × 3) ✓
(4 × 5) × 3 ✓
(3 × 5) × 3
(5 × 4) × 3 ✓
Match the expressions that are equal.
(20 × 4) × 8
⇔
80 × 8 ✓
3 × (4 × 1)
⇔
3 × 4 ✓
(2 × 5) × 8
⇔
10 × 8 ✓
(4 × 3) × 3
⇔
12 × 3 ✓
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