Adding using tidy numbers with problems

This Week WALT is : Solve addition problems by first adding a tidy number and then subtracting a small number compensate.

This maths worksheet I have to use different strategies like make a tidy number.

For Example: 35 + 30 = 65 - 3 = 62

We use bridges to add to the closest tidy number to 30.

Compensate means subtracting the answer.

I have learned some easy strategies to work out the answer on the maths worksheet.