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.

单项选择题 A3/A4型题
问答题 简答题