14 16 17 20 WALT – Understand the operation of subtraction

Mental starter With a partner discuss and solve this problem There are 6 people at a bus stop. A bus comes along and 3 people get on. How many people are left waiting?

The story of 5 teddy bears

1 2 3 4 5

Once there were 5 teddy bears

1 fell off the shelf …

1 2 3 4

… then there were 4

5 subtract 1 equals

4

1 2 3 4

1

5 - 1 = 4

2 3 4

1 2 3

7 - 3 = 4

Bead subtraction – Triangles Toy box subtraction - Squares Storyboard subtraction - Circles

1 2 3 4 5 6 7 8 9 10

Number line subtraction Diamonds

Plenary