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explain how to find 40×50 using mental math

Sagot :

IGreenidn
Multiply 4 * 5, which equals 20, and add the two zeroes(from 40 and 50) on the end.

That gives us:

2000
multiply 4 X5 which equals 20 then add two zeros because 40 has one zero and 50 has one zero hope that helps
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