find using distributive property:
a)728 X 101
b) 5437 X 1001
c) 824 x 25
d) 504 X 35
Answers
Answered by
7
Answer:
a. 728×(100+1)
=728×100+728+1
=72800+728
=73528
b. 5427×(1000+1 )
= 5427×1000+5427×1
= 5437000+ 5427
= 5442437
c.824 ×(20+5)
=824×20+824×1
=16480+4120
= 20060
d. (500+4)×35
= 500×35+4×35
= 5×100×35+4×35
= (5×35)×100+(4×35)
=175×100+140
= 17640
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Answered by
9
a)
We write 101 as ( 100 + 1 )
728× (100+1)
728×100+728×1
=72800 + 728
=73528
b)
We write 1001 as (1000+1)
=5437 × (1001 +1 )
= 5437 ×1000 +5437 ×1
= 543700 +5437
=5442437
c)
824×(20+5)
824×20+824×5
16480+4120
=20600
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