Inverse!

Today in maths we were looking at how we can use inverse to check if our calculations are correct. 

Inverse means the opposite. 

For example the inverse of addition is subtraction. 

We were completing tricky addition sums and then using the inverse (subtraction) to check if they were correct. 

Example:

234 + 144 = 378  then we used subtraction to double check!

378 - 144 = 234! Yep! We got it right!