题目内容
15-
| 4.2÷1.5-1.5×0.6 | [2-(
| ||||||||||||||||||||||||
(
|
|
|
(1)15-
+
-
,
=15-(
+
)+
,
=15-1+
,
=14
;
(2)4.2÷1.5-1.5×0.6,
=2.8-0.9,
=1.9;
(3)[2-(
-
)]÷
,
=[2-
]×
,
=
×
,
=2;
(4)(
-
)÷(
+
),
=
÷
,
=
×2,
=
;
(5)
×
+
÷4,
=
×
+
×
,
=
×(
+
),
=
×1,
=
;
(6)
×[
+(
-
)÷
],
=
×[
+
×2],
=
×[
+
],
=
×
,
=
.
| 7 |
| 18 |
| 1 |
| 5 |
| 11 |
| 18 |
=15-(
| 11 |
| 18 |
| 7 |
| 18 |
| 1 |
| 5 |
=15-1+
| 1 |
| 5 |
=14
| 1 |
| 5 |
(2)4.2÷1.5-1.5×0.6,
=2.8-0.9,
=1.9;
(3)[2-(
| 2 |
| 3 |
| 1 |
| 2 |
| 11 |
| 12 |
=[2-
| 1 |
| 6 |
| 12 |
| 11 |
=
| 11 |
| 6 |
| 12 |
| 11 |
=2;
(4)(
| 5 |
| 6 |
| 3 |
| 4 |
| 3 |
| 14 |
| 2 |
| 7 |
=
| 1 |
| 12 |
| 1 |
| 2 |
=
| 1 |
| 12 |
=
| 1 |
| 6 |
(5)
| 17 |
| 24 |
| 3 |
| 4 |
| 17 |
| 24 |
=
| 17 |
| 24 |
| 3 |
| 4 |
| 17 |
| 24 |
| 1 |
| 4 |
=
| 17 |
| 24 |
| 3 |
| 4 |
| 1 |
| 4 |
=
| 17 |
| 24 |
=
| 17 |
| 24 |
(6)
| 8 |
| 9 |
| 15 |
| 16 |
| 7 |
| 16 |
| 1 |
| 4 |
| 1 |
| 2 |
=
| 8 |
| 9 |
| 15 |
| 16 |
| 3 |
| 16 |
=
| 8 |
| 9 |
| 15 |
| 16 |
| 6 |
| 16 |
=
| 8 |
| 9 |
| 21 |
| 16 |
=
| 7 |
| 6 |
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