The pupils of Patcham Infant School worked very hard on each of these Number Round Up problems. Below you can see some of their results. Were these the only solutions to the problems or are there others to be found? Why not see of you can arrive at a different arrangement of numbers.
Well done, Emily and Natalie for this solution to making 9 from the digits.
Emily and Natalie tell us:
Charlotte and Amy used what they know about adding numbers to work out the answers:
This is the solution Daniel and Emily came up with:
Ella and Bisola also worked on finding a total of 11. They noticed the following:
Here is a solution for a total of 12 from Clare and Amy
Robbie explains a strategy for working this problem out:
Amy set a challenge for the class to find a way to make a Total of 20
The teacher, Ms. Hamnet, explains what the class did:
| We solved Amy's problem as a whole class, in the plenary. We used the odd and even number strategy to solve it. We knew that 20 was an even number, and could therefore be made by:
Odd + odd + even = even, or Even + even + even = even The total of the even numbers was 18, not 20, so we knew that the solution had to be in the form, odd + odd + even. Therefore, we placed the odd numbers in the corners, to use twice and then fitted the even numbers into the gaps to make 20. |
Here is the solution. Can you find a different way to solve Amy's challenge?
