Make one big triangle so the numbers that touch on the small triangles add to 10.
Can you find two butterflies to go on each flower so that the numbers on each pair of butterflies adds to the number on their flower?
What do you notice about these squares of numbers? What is the same? What is different?
Can you hang weights in the right place to make the the number balance balanced?
Try grouping the dominoes in the ways described. Are there any left over each time? Can you explain why?
Leah and Tom each have a number line. Can you work out where their counters will land?
Can you each work out the number on your card? What do you notice? How could you sort the cards?
If you have ten counters numbered 1 to 10, how many can you put into pairs that add to 10? Which ones do you have to leave out? Why?
In this calculation, the box represents a missing digit. What could the digit be? What would the solution be in each case?
This challenge is about finding the difference between numbers which have the same tens digit.
