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Q4. Using suitable properties of integers, evaluate the following:
(a) (-20) X (-2) X (-5) X7
(b) 52 X (-8) + (-52) X2
(c ) (-41) X 103
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Answer:
- +40×-35= -1400
- -416+(-104)=-416-104
= - (416+104)=-520
- -41(100+3)=-(4100+123).
- =-4223
Step-by-step explanation:
(-) × (-) = +
(-) = ++ × (-) = (-)
(-)× + = (-)
+ ×. +. =. +
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