题目内容
| 计算下面各题. 720+280÷5 |
36.5×1.4-8.51÷3.7 |
| ||||||||||||||||
(156×
|
(
|
[4-(
|
(1)720+280÷5,
=720+56,
=776;
(2)36.5×1.4-8.51÷3.7,
=51.1-2.3,
=48.4;
(3)
÷
-
,
=
×
-
,
=
-
,
=
;
(4)(156×
-26)×
,
=(48-26)×
,
=22×
,
=16;
(5)(
+
)÷(2-
),
=
÷
,
=
×2,
=
;
(6)[4-(
-
)]×
,
=[4-
]×
,
=
×
,
=
.
=720+56,
=776;
(2)36.5×1.4-8.51÷3.7,
=51.1-2.3,
=48.4;
(3)
| 1 |
| 2 |
| 2 |
| 3 |
| 2 |
| 5 |
=
| 1 |
| 2 |
| 3 |
| 2 |
| 2 |
| 5 |
=
| 3 |
| 4 |
| 2 |
| 5 |
=
| 7 |
| 20 |
(4)(156×
| 4 |
| 13 |
| 8 |
| 11 |
=(48-26)×
| 8 |
| 11 |
=22×
| 8 |
| 11 |
=16;
(5)(
| 4 |
| 3 |
| 5 |
| 2 |
| 3 |
| 2 |
=
| 23 |
| 6 |
| 1 |
| 2 |
=
| 23 |
| 6 |
=
| 23 |
| 3 |
(6)[4-(
| 3 |
| 4 |
| 3 |
| 8 |
| 4 |
| 29 |
=[4-
| 3 |
| 8 |
| 4 |
| 29 |
=
| 29 |
| 8 |
| 4 |
| 29 |
=
| 1 |
| 2 |
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