Adding and subtracting two-digit number and tens

Adding and subtracting Two-digit number and tens using concrete objects, pictorial representation and mentally.

Two-digit number and tens

Write one number under the other to help to understand that the ones don’t change. You simply add zero.

You have a go

Move down or up one row. It will help your child to visualize where the number is, and where do you want it to go.

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Use numicon to show that you only add tens, the ones don’t change.

Click on the picture to view it on amazon.