How can you explain in the most simple way (to a pupil age 10) what is 10% of 20% of 30% of 200?
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I'd take it one step at a time.
First do 30% of 200. That get's you to 60.
Then do 20% of 60. That gives 12.
Then do 10% of 12. That gives 1.2
I wouldn't first multiply 10% * 20% * 30%. That's hard to understand.
How would you go on to explain (again to the same child age 10) that the "of", in 20% of 80 is a multiplication sign?
Many thanks in advance
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