Given expression is, 0.004 x 0.04 x 0.4 x 0.0004The multiplication value without decimal point = 4 x 4 x 4 x 4 = 256Sum of the number of decimal places in the given numbers = 3 + 2 + 1 + 4 = 10Now, in the product, the decimal point is marked off to obtain as many places of decimal.Then the answer is 0.0000000256.
Given expression = (.896 x .752 +.896 x .248) / (.7 x .034 + .7 x.966)=.[896 x (.752+.248)] / [.7 x (.034+.966)] = .(896 x 1) / ( .700 x 1)=896/700 = 1.28
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