1. Simplify by using suitable properties (also state them)
a) 71×56+29×56
b) 135×52+135×48
c) 1685×16825-1685×6285
d)569×17+569×13+569×70
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Answer:
56(71+29)=56(100)
=5600
135(52+48)
135(100)
13500
1685(16825-6285)
1685(10540)
17,759,900
569(17+13+70)
569(100)
56900
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