题目内容
| 脱式计算: | ||
| ① |
②2 |
③ |
| ④12÷( |
⑤14÷1 |
⑥ |
解:①
×
÷1
,
=
×
×
,
=
×
×
,
=
×
,
=
;
②2
÷(1+
),
=2
÷1
,
=
×
,
=
;
③
÷(
×
),
=
÷
,
=
;
④12÷(
÷
),
=12÷
,
=
;
⑤14÷1
×1
,
=14×
×
,
=14×(
×
),
=14×1,
=14;
⑥
×6
×1
,
=
×
,
=
=
=
=
=
②2
=2
=
=
③
=
=
④12÷(
=12÷
=
⑤14÷1
=14×
=14×(
=14×1,
=14;
⑥
=
=
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