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Can you solve our number challenge ?

Posted by rowling on October 15, 2015 in Uncategorized |

In our numeracy lessons we have been making 20 using 2 numbers.  They are called number bonds.  We rolled a dice to make a starting number then we had to find the matching pair to make 20.

We have a great game to practise our number bonds, it is called http://www.mathplayground.com/number_bonds_20.html

The next challenge Mrs Gribben set us was to make 20 using 3 numbers, this was tricky.

Can you solve this problem ? 13 + ? + ? = 20

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