WALT - Subtraction within 10
Task – We have already seen what happens when we take 1 or 0 away from a number, but what about other numbers?
Find 8 items from around your home and group them all together.
Now take 6 of these items away … how many have you got left?
To write this in a number sentence we need to ask ourselves
How many objects were there at first?
Then what happened to the objects?
How many objects are there now?
8 – 6 = 2
Task - Remember, we can also use our number line to help us with subtraction, by counting backwards.
16 – 5 = 11
We start at 16 on the number line and take 5 away by counting backwards 5 places
Using the number line to help you, can you complete these number sentences?
20–3 = 11-6 =
9-8 = 12–4 =
15-10 = 10–5 =