Challenge a friend
Pick a game. You get a code and a link to send — and you both get exactly the same questions, so whoever scores higher actually won. They can play now or at break tomorrow. It does not have to be at the same time.
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The Whole Run
Add fifteen numbers in one step.
Challenge
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Near a Hundred
97 × 98, in two steps you can do in your head.
Challenge
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What's Left
What is left over, without doing the division.
Challenge
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Square It
40 × 34 + 9. That is 37 squared.
Challenge
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Make One
One is three eighths and what?
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In Common
Where do fours and sixes meet?
Challenge
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Line It Up
Points under points. The ends can go where they like.
Challenge
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Same Pieces
Cut them both the same way, then count.
Challenge
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Tens First
Tens with tens, ones with ones. Then put it back together.
Challenge
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Table Rush
It remembers which tables you miss, and gives you those.
Challenge
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Which is Bigger?
3/5 or 3/8? Trust the pieces, not the numbers.
Challenge
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Move the Point
The digits move. The point stays where it is.
Challenge
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Bigger or Smaller?
One tap. Decide before you work it out.
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Unit Rush
Find one unit, and the rest of the problem falls open.
Challenge
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Area Rush
Cut the rectangle into tens and ones, and the hard one gets easy.
Challenge
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Bond Rush
How many bonds can you break in sixty seconds?
Challenge