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Bishops Waltham Infant School

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Adding 3 digits

We would like you to practice adding 3 numbers together using an unstructured number line to support you.

If you are finding this tricky use a number line with the numbers marked on.


The activities below are in order of difficulty and we do not expect you to complete all of them. We suggest you start with the second activity and if it is too difficult, try the first activity then come back to the second one.


If you are feeling confident try using your number bonds to find the answer more efficiently.

For example:

3 + 5 + 7 =

7 + 3 = 10 and 10 + 5 = 15 so the answer is 15

Adding to 2 digit numbers

We would like you to spend the rest of the week exploring how to add to a two digit number. We learned how to do this before christmas using an unstructured number line, but this time we would like you to cross the tens boundary.

For example:

Year 2 are very good at drawing the dienes to add two numbers as well as adding them on an unstructured numberline. We show both ways in school and you are allowed to choose the most efficient way of solving the problem.

The activities below are designed to be spread out over the rest of the week, but again you are not expected to complete all of them, so please choose the right challenge for you. The activities are in difficulty order.

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