
计算:(1)134×18.35?9720×1.75+3.5×12(2)1124×[(1.5+223)÷3.75?23]÷89(3)[2?(8.25?513)×23]
计算:(1)134×18.35?9720×1.75+3.5×12(2)1124×[(1.5+223)÷3.75?23]÷89(3)[2?(8.25?513)×23]÷0....
计算:(1)134×18.35?9720×1.75+3.5×12(2)1124×[(1.5+223)÷3.75?23]÷89(3)[2?(8.25?513)×23]÷0.9(4)223×(178?56)÷[314÷(18+156)].
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(1)1
×18.35?9
×1.75+3.5×
=1.75×18.35-9.35×1.75+1.75,
=(18.35-9.35+1)×1.75,
=10×1.75,
=17.5;
(2)1
×[(1.5+2
)÷3.75?
]÷
=
×[(
+
)×
-
]×
,
=
×[
×
-
]×
,
=
×[(
-
]×
,
=
×
×
,
=
;
(3)[2?(8.25?5
)×
]÷0.9,
=[2-(
-
)×
]÷0.9,
=[2-
×
3 |
4 |
7 |
20 |
1 |
2 |
=1.75×18.35-9.35×1.75+1.75,
=(18.35-9.35+1)×1.75,
=10×1.75,
=17.5;
(2)1
1 |
24 |
2 |
3 |
2 |
3 |
8 |
9 |
=
25 |
24 |
3 |
2 |
8 |
3 |
4 |
15 |
2 |
3 |
9 |
8 |
=
25 |
24 |
25 |
6 |
4 |
15 |
2 |
3 |
9 |
8 |
=
25 |
24 |
10 |
9 |
2 |
3 |
9 |
8 |
=
25 |
24 |
4 |
9 |
9 |
8 |
=
25 |
48 |
(3)[2?(8.25?5
1 |
3 |
2 |
3 |
=[2-(
33 |
4 |
16 |
3 |
2 |
3 |
=[2-
35 |
12 |