1 out of 3
Make one big triangle so the numbers that touch on the small triangles add to 10.
1 out of 3
Try grouping the dominoes in the ways described. Are there any left over each time? Can you explain why?
1 out of 3
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?
2 out of 3
In Sam and Jill's garden there are two sorts of ladybirds with 7 spots or 4 spots. What numbers of total spots can you make?
3 out of 3
Arrange the numbers 1 to 6 in each set of circles below. The sum of each side of the triangle should equal the number in its centre.
1 out of 3
Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game.
