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1 vote
Does anyone have any ideas for multiplying 249 times 398 quickly and mentally? Everything online is too complex.

User Hengameh
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2 Answers

5 votes
First do 2times3 and then add 4 0’s because they are in the hundreds place and each of them have 2 0’s then do 9times4 and add 2 0’s to the answer and then do 9times8 add up all the answers :)
User TGW
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3.4k points
1 vote

Answer:

So, the first solution is a calculator but sometime we don't have a calculator so, do

200 X 300 = A

40 X 90 = B

9 X 8 = C

then add just do multiplication from there like

A + B = D

D + C = E

Then your finally answer would be E

Hope that helps that's the way I do math quick in my head

(Btw the answer to 249 X 398 = 63,672 )

User Kona Suresh
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2.9k points