题目内容
(1)14
| (2)4.2÷1.5-1.5×0.6= | (3)(4
| ||||||||||||||
(4)51.6÷[(3
| (5)(0.92+
| (6)(5
|
(1)14
-6.46-3.54,
=14
-(6.46-3.54),
=14
-10,
=4
;
(2)4.2÷1.5-1.5×0.6,
=2.8-0.9,
=1.9;
(3)(4
-3
)÷(
+
),
=
÷
,
=
;
(4)51.6÷[(3
-1.25)×
],
=51.6÷[(3.4-1.25)×0.8],
=51.6÷[3.4×0.8-1.25×0.8],
=51.6÷[2.72-1],
=51.6÷1.72,
=30;
(5)(0.92+
)÷(4-2
),
=(
+
)÷(
-
),
=1÷
,
=
;
(6)(5
-1.8)÷[(1.15+
)×1
],
=(5
-1
)÷[(1
+
)×1
],
=3
÷[1
×1
],
=3
÷[
×
],
=
÷3,
=
.
| 3 |
| 17 |
=14
| 3 |
| 17 |
=14
| 3 |
| 17 |
=4
| 3 |
| 17 |
(2)4.2÷1.5-1.5×0.6,
=2.8-0.9,
=1.9;
(3)(4
| 5 |
| 6 |
| 3 |
| 4 |
| 3 |
| 14 |
| 2 |
| 7 |
=
| 13 |
| 12 |
| 1 |
| 2 |
=
| 13 |
| 6 |
(4)51.6÷[(3
| 2 |
| 5 |
| 4 |
| 5 |
=51.6÷[(3.4-1.25)×0.8],
=51.6÷[3.4×0.8-1.25×0.8],
=51.6÷[2.72-1],
=51.6÷1.72,
=30;
(5)(0.92+
| 2 |
| 25 |
| 7 |
| 9 |
=(
| 23 |
| 25 |
| 2 |
| 25 |
| 36 |
| 9 |
| 25 |
| 9 |
=1÷
| 11 |
| 9 |
=
| 9 |
| 11 |
(6)(5
| 2 |
| 5 |
| 13 |
| 20 |
| 2 |
| 3 |
=(5
| 2 |
| 5 |
| 4 |
| 5 |
| 3 |
| 20 |
| 13 |
| 20 |
| 2 |
| 3 |
=3
| 3 |
| 5 |
| 4 |
| 5 |
| 2 |
| 3 |
=3
| 3 |
| 5 |
| 9 |
| 5 |
| 5 |
| 3 |
=
| 18 |
| 5 |
=
| 6 |
| 5 |
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