This week I have been looking at different types of strategies to solve addition and subtraction problems.
One of the strategies I have used is 'Subtracting using tidy numbers'. My learning intention was: 'We are learning to solve problems by equal additions that turn one of the numbers into a tidy number'.
What this means is, if you add a number to both numbers in an equation to make one of the numbers a tidy number. The answer will still be the same, even if you didn't.
example; 61-37= 24 if you add 3 to 61 & 37 you have 64-40 and your answer will still be 24.