Maths Learning

WALT: Use doubling and halving to solve multiplication problems.


1. 18 X 4 =72
Half 18 = 9
Double 4 = 8
so 9 X 8 = 72

2. 20 X 8 =160 
10 X 16 =160

3. 16 X 5 =80 
8 X 10  =80

My next step is....To learn how to solve problems using tidy numbers.

Like 6 X 48 =
6 X 50 = 300
Take away 6 X 2 = 12
300 -12 = 288