Find using distributive property :
(a) 728 101 (b) 5437
1001 (c) 824
25 (d) 4275
125 (e) 504
35
(a) 728 101= 728
(100 + 1)
= 728 100 + 728
1
= 72800 + 728
= 73528
(b) 5437 1001 = 5437
(1000 + 1)
= 5437 1000 + 5437
1
= 5437000 + 5437
= 5442437
(c) 824 25 (800 + 24)
25 = (800 + 25 - 1) 25
=800 25+25 x 25-1
25
= 20000 + 625 - 25
= 20000 + 600
= 20600
(d) 4275 125 = (4000 + 200 + 100 - 25)
125
= 4000 125 + 200
125 + 100
125 - 25
125
= 500000 + 25000 + 12500 - 3125
= 534375
(e) 504 35 = (500 + 4)
35
= 500 x 35 +4 35
= 17500 + 140
= 17640