A-A+

直接写出计算结果①2-7×27=②17-17×1718=③1-12-13=④20.1+14-

2022-08-14 02:55:51 问答库 阅读 200 次

问题详情

直接写出计算结果
①2-7×2

7

=
②17-17×17

18

=
③1-1

2

-1

3

=
④20.1+1

4

-0.375=

⑤0.1252=⑥252÷153=⑦5

8

×98÷3

8

×100=⑧(2

71

+1

69

)×23+25

71

=

参考答案

①2-7×27,
=2-2,
=0;

②17-17×1718,
=17×(1-1718),
=17×118,
=1718;

③1-12-13,
=12-13,
=16;

④20.1+14-0.375,
=20.35-0.375,
=19.975;

⑤0.1252
=0.125×0.125,
=0.015625;

⑥252÷153
=25×2515×15×15,
=527;

⑦58×98÷38×100,
=(58×83)×(98×100),
=53×9800,
=490003;

⑧(271+169)×23+2571,
=271×23+169×23+2571,
=4671+13+2571,
=4671+2571+13,
=1+13,
=113.

考点:结果