Today, in our live lesson, we will be looking at using our number bonds to 10 and 20 to solve problems.
You may need a 100 square or some pasta/lego pieces to help you.
Using number bonds to help solve problems:
7 + 4 =
We can use our number bond knowledge to help us solve problems. What number goes with 7 to make 10? The answer is 3.
7 + 3 = 10 and there is 1 left over. So now we can take that 10 and add the remaining 1 to get the answer 10 + 1 = 11.
Children can show it like this:
Here is another example using our number bonds to 20.
14 + 8 =
What number goes with 4 to make 10? The answer is 6. 14 + 6 = 20. We now have 2 left over so we add them to 20. 20 + 2 = 22.
Children can show it like this:
Have a go at practising with the chilli challenges below. If you complete them make up some more of your own number challenges!