题目内容
脱式计算
(
| 9÷[1-(
| 1.02÷(5+0.4×0.25) |
(1)(
+
)÷
+
,
=
×
+
,
=
+
,
=
;
(2)9÷[1-(
+
)],
=9÷[1-
],
=9÷
,
=27;
(3)1.02÷(5+0.4×0.25),
=1.02÷(5+0.1),
=1.02÷5.1,
=0.2.
| 4 |
| 5 |
| 1 |
| 4 |
| 7 |
| 3 |
| 7 |
| 10 |
=
| 21 |
| 20 |
| 3 |
| 7 |
| 7 |
| 10 |
=
| 9 |
| 20 |
| 7 |
| 10 |
=
| 23 |
| 20 |
(2)9÷[1-(
| 1 |
| 2 |
| 1 |
| 6 |
=9÷[1-
| 2 |
| 3 |
=9÷
| 1 |
| 3 |
=27;
(3)1.02÷(5+0.4×0.25),
=1.02÷(5+0.1),
=1.02÷5.1,
=0.2.
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