03-10-2016
Mathematics

Answered

explain using the basic fact can help you find 10×20×30×40 mentally

Verified Answer :

ninjawakekia ninjawakekia

03-10-2016

Multiply 20 by 10 first
Then 200 by 30 which is 6000
Then 6000 by 40 which is 240000

Basically just multiply the numbers that's aren't 0
Like 2 in 200 times 3 in 30
Which is 6 then add the 0s so 6+000=6000

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