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Alex73 [517]
3 years ago
14

Jason needs to explain to his class how to use mental math to find the product of 400,000×50,000 how would u explain that

Mathematics
1 answer:
elena55 [62]3 years ago
4 0
You  would do 5 times 4 which is 20. then count how many zero's there are and put them after the 20.
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This seems a bit too easy though, did you mean f(n)=f(n-1)+2n ? In this case :
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