Arranging Additions and Sorting Subtractions
Order these four calculations from easiest to hardest. How did you decide?
Order these four calculations from easiest to hardest. How did you decide?
How many starfish could there be on the beach, and how many children, if I can see 28 arms?
In this activity, shapes can be arranged by changing either the colour or the shape each time. Can you find a way to do it?
Can you work out the domino pieces which would go in the middle in each case to complete the pattern of these eight sets of three dominoes?
Kimie and Sebastian were making sticks from interlocking cubes and lining them up. Can they make their lines the same length? Can they make any other lines?
Can you arrange fifteen dominoes so that all the touching domino pieces add to 6 and the ends join up? Can you make all the joins add to 7?
Jack's mum bought some candles to use on his birthday cakes and when his sister was born, she used them on her cakes too. Can you use the information to find out when Kate was born?
On a farm there were some hens and sheep. Altogether there were 8 heads and 22 feet. How many hens were there?