题目内容
| 477×85-7784÷56 | 28.5+3.14÷(5.128-4.5)×2.5 | ||||||||||||||||||||||
7
| [(
| ||||||||||||||||||||||
1
|
(1)477×85-7784÷56,
=40545-139,
=40406;
(2)28.5+3.14÷(5.128-4.5)×2.5,
=28.5+3.14÷0.628×2.5,
=28.5+5×2.5,
=28.5+12.5,
=41;
(3)7
÷
-(
+2
)×2
,
=7
÷
-
×2
,
=10-
,
=
,;
(4)[(
+
-
)×
÷3
]÷[1-1
÷15],
=[(
-
)×
÷3
]÷[1-
],
=[
×
÷3
]÷
,
=[
÷3
]÷
,
=
÷
,
=
;
(5)1
×〔0.625+(4
-2
)÷(1.83+
)〕,
=1
×〔0.625+
÷2.28〕,
=1
×〔0.625+
〕,
=1
×
,
=
.
=40545-139,
=40406;
(2)28.5+3.14÷(5.128-4.5)×2.5,
=28.5+3.14÷0.628×2.5,
=28.5+5×2.5,
=28.5+12.5,
=41;
(3)7
| 1 |
| 5 |
| 18 |
| 25 |
| 7 |
| 12 |
| 5 |
| 8 |
| 5 |
| 14 |
=7
| 1 |
| 5 |
| 18 |
| 25 |
| 77 |
| 24 |
| 5 |
| 14 |
=10-
| 121 |
| 16 |
=
| 39 |
| 16 |
(4)[(
| 1 |
| 2 |
| 3 |
| 20 |
| 1 |
| 15 |
| 12 |
| 49 |
| 3 |
| 7 |
| 7 |
| 8 |
=[(
| 13 |
| 20 |
| 1 |
| 15 |
| 12 |
| 49 |
| 3 |
| 7 |
| 1 |
| 8 |
=[
| 7 |
| 12 |
| 12 |
| 49 |
| 3 |
| 7 |
| 7 |
| 8 |
=[
| 1 |
| 7 |
| 3 |
| 7 |
| 7 |
| 8 |
=
| 1 |
| 24 |
| 7 |
| 8 |
=
| 1 |
| 21 |
(5)1
| 5 |
| 7 |
| 1 |
| 6 |
| 4 |
| 15 |
| 9 |
| 20 |
=1
| 5 |
| 7 |
| 19 |
| 10 |
=1
| 5 |
| 7 |
| 95 |
| 114 |
=1
| 5 |
| 7 |
| 405 |
| 456 |
=
| 405 |
| 266 |
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