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Roll These Dice

Roll two red dice and a green dice. Add the two numbers on the red dice and take away the number on the green. What are all the different possible answers?

Bipin's Choice

Bipin is in a game show and he has picked a red ball out of 10 balls. He wins a large sum of money, but can you use the information to decided what he should do next?

Trick or Treat

Mrs. Smith had emptied packets of chocolate-covered mice, plastic frogs and gummi-worms into a cauldron for treats. What treat is Trixie most likely to pick out?

Three Spinners

Age 7 to 11
Challenge Level

This is a number spinner. When you spin it, it can land on any number from one to ten.
spinner

Here are three more number spinners with ten numbers on them. But you cannot see what the numbers are.
three spinners

I spun the red one $15$ times and got these numbers:

list of numbers
I spun the blue one $15$ times and the yellow one $15$ times and got these numbers:

list of numberslist of numbers


Then I did the same things again twice over. I got these numbers, but forgot to note which numbers came from which spinner:

lists of numbers


Can you work out which spinner generated each list? How did you do it?

We could call the numbers on the first spinner "Numbers from one to ten".

Can you think of a title for the set of numbers on the red spinner?

Can you think of titles for the sets of numbers on the blue and the yellow spinners?
The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to embed rich mathematical tasks into everyday classroom practice.
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