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What is the easy way for a 12 year old to work out 7 to the power of 20?
Wiki User
∙ 9y ago
It's easy using a calculator that has a button labeled x^y . Press calculator buttons 7, then x^y, then 20, then =.
This doesn't help the 12 year old understand what they're doing, however. I'd start by computing the 4th power of 7, then taking that to the 5th power.
Working it by hand is more instructive, but that's a LOT of multiplication!
If the 12 year old has already learned logarithms then that's the way to go, i.e., find the anti-log of 20 times the log of 7.
Wiki User
∙ 9y ago
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