Representing Numbers
Thank you to everybody who sent us their thoughts about this challenge. William from Dronfield Junior School in England sent in these solutions, splitting the total number of dots into tens and ones:
Finley from Goodrich C E Primary School in the UK also used tens and ones to represent the number:
Polly from Gorse Ride Junior School in England sent in these number sentences to represent the dots:
20+3=23
10+10+3=23
15+5+3=23
10+5+8=23
5+5+10+3=23
Polly has used the same idea of splitting the total number into tens and ones, but has also found solutions where the number 5 is important. I wonder why the number 5 might stand out when someone looks at the dot picture?
If anybody has any different ideas about how to represent this number, please email us.
You may also like
Which Scripts?
There are six numbers written in five different scripts. Can you sort out which is which?
The Deca Tree
Find out what a Deca Tree is and then work out how many leaves there will be after the woodcutter has cut off a trunk, a branch, a twig and a leaf.
A Mixed-up Clock
There is a clock-face where the numbers have become all mixed up. Can you find out where all the numbers have got to from these ten statements?