Introduction to Multiplication & Division

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Presentation transcript:

Introduction to Multiplication & Division 1st Level

Multiplication Multiplication can be viewed as repeated addition. Example: 2+2+2+2+2=10 5X2=10

Arrays Repeated addition Using arrays is a method used to give a visual representation of multiplication. E.g. Ben and Susan go to the shop for sweets. Ben and Susan each buy 3 sweets each. Repeated addition : 3+3=6 Multiplication: 2 (friends) X 3 (sweets) = 6 Multiplication sum Array

Commutative Laws Commutative law: when we swap numbers over, in addition or multiplication, we still get the same answers. 2 X 3 = 6 3 X 2 = 6

Doubling & Halving Children are encourage to look for patterns that will help with quicker recall through recognition of doubling and halving. The 2 and 4 times table can be used for doubling and halving. e.g. 3 X 2 = 6 3 X 4 = 12 3 & 6 X table 4 & 8 X table 5 & 10 X table Can all be used to represent and investigate doubling and halving.

Class Activities