题目内容
计算下面各题.
|
|
| ||||||||||||||||
| 68×(
| [1-(
|
(1)
×4÷
,
=
×4×
,
=1;
(2)
+
×13,
=
×(13+1),
=
×14,
=3;
(3)
×
÷
×
,
=
×
×
×
,
=
;
(4)
-0.3×
,
=
-
×
,
=
-
,
=
;
(5)68×(
-
),
=68×
-68×
,
=60-18,
=42;
(6)[1-(
+
)]÷
,
=[1-
]÷
,
=
×4,
=
.
| 1 |
| 5 |
| 4 |
| 5 |
=
| 1 |
| 5 |
| 5 |
| 4 |
=1;
(2)
| 3 |
| 14 |
| 3 |
| 14 |
=
| 3 |
| 14 |
=
| 3 |
| 14 |
=3;
(3)
| 4 |
| 25 |
| 3 |
| 8 |
| 4 |
| 25 |
| 3 |
| 8 |
=
| 4 |
| 25 |
| 3 |
| 8 |
| 25 |
| 4 |
| 3 |
| 8 |
=
| 9 |
| 64 |
(4)
| 3 |
| 8 |
| 5 |
| 6 |
=
| 3 |
| 8 |
| 3 |
| 10 |
| 5 |
| 6 |
=
| 3 |
| 8 |
| 1 |
| 4 |
=
| 1 |
| 8 |
(5)68×(
| 15 |
| 17 |
| 9 |
| 34 |
=68×
| 15 |
| 17 |
| 9 |
| 34 |
=60-18,
=42;
(6)[1-(
| 1 |
| 4 |
| 3 |
| 8 |
| 1 |
| 4 |
=[1-
| 5 |
| 8 |
| 1 |
| 4 |
=
| 3 |
| 8 |
=
| 3 |
| 2 |
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