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Are these statements always true, sometimes true or never true?
This activity involves rounding four-digit numbers to the nearest thousand.
We can arrange dots in a similar way to the 5 on a dice and they usually sit quite well into a rectangular shape. How many altogether in this 3 by 5? What happens for other sizes?
What happens when you round these three-digit numbers to the nearest 100?
Are these statements always true, sometimes true or never true?
Ayah conjectures that the diagonals of a square meet at right angles. Do you agree? How could you find out?
This challenge is a game for two players. Choose two of the numbers to multiply or divide, then mark your answer on the number line. Can you get four in a row?
How many ways can you find to do up all four buttons on my coat? How about if I had five buttons? Six ...?
What happens if you join every second point on this circle? How about every third point? Try with different steps and see if you can predict what will happen.
Can you find a way of counting the spheres in these arrangements?
Which pairs of cogs let the coloured tooth touch every tooth on the other cog? Which pairs do not let this happen? Why?
Some of the numbers have fallen off Becky's number line. Can you figure out what they were?