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Today we will discuss the inverse operation to help us find the answers. Remember the inverse operation for addition is subtraction.

Today during our virtual lesson we will be recapping last weeks pyramid work. I will ensure that you all have a clear understanding of adding either two 1-digit numbers together or two 2-digit numbers together.

We will talk about strategies that we have learnt in the classroom, such as adding the tens together first, then the ones, then adding the tens and the ones together.


27 + 28 =

20 + 20 = 40

7 + 8 = 15


40 + 15 = 55


Parents - In school children use dienes to help them count in hundreds, tens and ones. It would be helpful for some children if you were able to find household objects that the children could use to help with their counting. (Example: Lego blocks, different size lego to represent the tens and ones).