题目内容
计算题
(1)81×[(4
+0.05×700)÷1
]
(2)(9
-10
÷1
)÷1
(3)[(2
+1.5)÷
-3
]÷2.8.
(1)81×[(4
| 1 |
| 7 |
| 2 |
| 7 |
(2)(9
| 1 |
| 5 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 3 |
(3)[(2
| 2 |
| 3 |
| 5 |
| 6 |
| 2 |
| 5 |
(1)81×[(4
+0.05×700)÷1
],
=81×[(4
+35)÷1
],
=81×(
×
),
=81×
,
=2466;
(2)(9
-10
÷1
)÷1
,
=(9
-8
)÷1
,
=
×
,
=
;
(3)[(2
+1.5)÷
-3
]÷2.8,
=[
÷
-3
]÷2.8,
=(5-3
)÷2.8,
=
÷2.8,
=
.
| 1 |
| 7 |
| 2 |
| 7 |
=81×[(4
| 1 |
| 7 |
| 2 |
| 7 |
=81×(
| 274 |
| 7 |
| 7 |
| 9 |
=81×
| 274 |
| 9 |
=2466;
(2)(9
| 1 |
| 5 |
| 1 |
| 2 |
| 1 |
| 4 |
| 1 |
| 3 |
=(9
| 1 |
| 5 |
| 2 |
| 5 |
| 1 |
| 3 |
=
| 4 |
| 5 |
| 3 |
| 4 |
=
| 3 |
| 5 |
(3)[(2
| 2 |
| 3 |
| 5 |
| 6 |
| 2 |
| 5 |
=[
| 25 |
| 6 |
| 5 |
| 6 |
| 2 |
| 5 |
=(5-3
| 2 |
| 5 |
=
| 8 |
| 5 |
=
| 4 |
| 7 |
练习册系列答案
相关题目