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# Lesson Three

## Theo has made some more great word problems. Can you solve his word problems?

## Fantastic work Edward!

Today we are going to recap our number bond knowledge to help us add together three or more single digit numbers.

Starter: Practise counting forwards and backwards in your 2s, 5s, and 10s. If you want a challenge try your 3s or 4s!

**Task one: **

So we are going to add together single digit numbers. Look at the numbers below:

3 + 5 + 7 =

What can you see? Hopefully you are all shouting out **3 **and **7 **make **10**!! Well done, you've spotted a number bond. Now it's easy to add together...... 10 + 5 = 15.

So remember those number cards you made. You are going to use these to create some number sentences. Turn them over so you can't see what the number is.

- Start by picking three cards.
- Now see if there are any number facts you know. Can you see a number bond?
- Add these together first. Then add the final number.
- see picture below.....

**Task two: **

Now lets try adding together 4 numbers.

- pick four numbers (remember to have these muddled up so you can't see them!)
- What do you see?
- Can you spot a number bond?
- What other facts can you see?
- Now add them together.

**Task Three: **

Now take your three single digit number sentence and put it into a word problem.

e.g. 4 + 6 + 2 =

Mrs Edwards had four cakes, Mrs R-J had six Chocolate fudge cakes (because she loves these!) and Mrs Nichol had two vanilla sponges. How many cakes did you teachers have altogether?

**CHALLENGE: **

Now can you use a two digit numbers. We're going to start with our teen numbers first.

- Pick THREE cards
- Look at the tens... As we are working with teens we know each number has one ten. so.... 3 x 10 = 30
- Then look at the ones. Can you spot a number bond or known number fact? In this case 3 + 7 = 10
- Then I can add my other ones number ... 10 + 4 = 14
- Finally I will add together my tens and ones. 30 + 14 = 44
- see the pictures below.

Have a go yourself. Keep to the teens first before you take the super challenge and pick three different two digit numbers.

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