This is a game for two players. Let's call them A and B.
A begins by typing any number into a calculator.
B then multiplies this number by another number, trying to get the answer as close as possible to 100.
A then multiplies this number by another number, trying to get even closer to 100.
The winner is the first player to make the total equal a hundred point something.
Play the game many times. Can you find a good strategy for winning?
How did you use this starter? Can you suggest
how teachers could present or develop this resource? Do you have any comments? It is always useful to receive
feedback and helps make this free resource even more useful for Maths teachers anywhere in the world.
Click here to enter your comments.
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Teacher, do your students have
access to computers?
Here a concise URL for a version of this page without the comments.
Here is the URL which will take them to a similar number puzzle.