Knowing how to count back can help us with subtracting on a number line.
Create a pattern by subtracting 1 each time.
We are going to use a number line to see how to find the difference between two numbers.
Use the number line to help you find the value of 35 - 24.
When adding to a number, jump forward (to the right).
When subtracting from a number, jump backwards (to the left).
uses mental and written strategies for addition and subtraction involving two-, three-, four and five-digit numbers