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Four bags contain a large number of 1s, 3s, 5s and 7s.
Can you pick ten numbers from the bags that add up to 37?
What Numbers Can We Make? is a suitable follow-up problem.
An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.
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?