题目内容
| 脱式计算. 2004×8.1+1.9×2004 |
| (1-
| ||||||||||||||||
| 4.38×0.75+3.62×0.75 | 12
| 35÷[(
|
(1)2004×8.1+1.9×2004
=(8.1+1.9)×2004,
=10×2004,
=20040;
(2)
-(
+
×
)×
=
-(
+
)×
,
=
-
×
,
=
-
,
=0;
(3)(1-
)÷(
+
)
=
÷
,
=
;
(4)4.38×0.75+3.62×0.75
=(4.38+3.62)×0.75,
=8×0.75,
=6;
(5)12
×11-12.5
=12.5×11-12.5,
=(11-1)×12.5,
=10×12.5,
=125;
(6)35÷[(
-
)×3].
=35÷[
×3],
=35÷1,
=35.
=(8.1+1.9)×2004,
=10×2004,
=20040;
(2)
| 1 |
| 5 |
| 3 |
| 5 |
| 3 |
| 5 |
| 1 |
| 3 |
| 1 |
| 4 |
=
| 1 |
| 5 |
| 3 |
| 5 |
| 1 |
| 5 |
| 1 |
| 4 |
=
| 1 |
| 5 |
| 4 |
| 5 |
| 1 |
| 4 |
=
| 1 |
| 5 |
| 1 |
| 5 |
=0;
(3)(1-
| 3 |
| 4 |
| 3 |
| 10 |
| 1 |
| 5 |
=
| 1 |
| 4 |
| 1 |
| 2 |
=
| 1 |
| 2 |
(4)4.38×0.75+3.62×0.75
=(4.38+3.62)×0.75,
=8×0.75,
=6;
(5)12
| 1 |
| 2 |
=12.5×11-12.5,
=(11-1)×12.5,
=10×12.5,
=125;
(6)35÷[(
| 5 |
| 6 |
| 2 |
| 3 |
=35÷[
| 1 |
| 3 |
=35÷1,
=35.
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