问题
解答题
下面各题,怎样简便就怎样算.
63×101+37
2850-814-86
58×101
414+127+586+73.
答案
(1)63×101+37
=63×(100+1)+37
=63×100+63+37
=6300+(63+37)
=6300+100
=6400;
(2)2850-814-86
=2850-(814+86)
=2850-900
=1950;
(3)58×101
=58×(100+1)
=58×100+58
=5800+58
=5858;
(4)414+127+586+73
=414+586+(127+73)
=1000+200
=1200.