Wednesday 3rd February
LF: To use partitioning for multiplication
Today, you will use the method of partitioning to multiply 2-digit numbers. Partitioning is a way of working out maths problems that involve large numbers by splitting them into smaller units so they're easier to work with. I have shown you some examples below.
Partitioning
15 x 5 = 75
10 x 5 = 50
5 x 5 = 25
27 x 3 = 81
20 x 3 = 60
7 x 3 = 21
“20 multiplied by 3 equals 60 and 7 multiplied by 3 equals 21. 60 add 21 equals 81.”
Star challenge
Try this …
Hassan is calculating 32 x 5. He writes his answer 15010. Can you work out Hassan’s mistake and write an explanation of how he could do it correctly?