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计算 写出主要过程 能简算的要简算.34+34÷29×227=(3-512)×331-14=

2022-08-14 02:42:43 问答库 阅读 200 次

问题详情

计算,写出主要过程,能简算的要简算.
3

4

+3

4

÷2

9

×2

27

=(3-5

12

)×3

31

-1

4

=6-3

8

÷27

4

-7

18

=

3

7

÷15

4

+3

4

×12

7

=

9

48

÷3

4

÷6=[(2-1

4

)÷3

4

]×3

4

=

参考答案

①34+34÷29×227
=34+34×92×227
=34+278×227
=34+14
=1;

②(3-512)×331-14
=3112×331-14
=14-14
=0;

③6-38÷274-718
=6-38×427-718
=6-118-718
=559;

④37÷154+34×127
=37×415+34×127
=37×(415+3)
=37×4915
=125;

⑤948÷34÷6
=948×43×16
=124;


⑥[(2-14)÷34]×34
=[74×43]×34
=73×34
=134.

考点:过程