Look at these butterflies and flowers. All of them have a number.
Can you find two butterflies to go on each flower so that the butterfly numbers add to the flower number?
Which pair of butterflies has no flower to go to? Why?
Which flower cannot have a pair of butterflies on it? Why?
Click below to see how three children started this task:
Did you start the problem in the same way as any of these children?
What do you think about each method?
You may want to print out this sheet which includes the task and all three children's methods.
Printable NRICH Roadshow resource.