题目内容
用第等式计算:
(1)[(20+9.744÷2.4)×0.15-1.63]÷0.25
(2)108÷[(0.68+3.72÷1
-68%)×
].
(1)[(20+9.744÷2.4)×0.15-1.63]÷0.25
(2)108÷[(0.68+3.72÷1
| 3 |
| 5 |
| 10 |
| 13 |
(1)[(20+9.744÷2.4)×0.15-1.63]÷0.25,
=[(20+4.06)×0.15-1.63]÷0.25,
=[24.06×0.15-1.63]÷0.25,
=[3.609-1.63]÷0.25,
=1.979÷0.25,
=7.916;
(2)108÷[(0.68+3.72÷1
-68%)×
],
=108÷[(0.68+2.325-68%)×
],
=108÷[(0.68-68%+2.325)×
],
=108÷[2
×
],
=108÷[(2+
)×
],
=108÷[2×
+
×
],
=108÷(
+
),
=108÷
,
=
.
=[(20+4.06)×0.15-1.63]÷0.25,
=[24.06×0.15-1.63]÷0.25,
=[3.609-1.63]÷0.25,
=1.979÷0.25,
=7.916;
(2)108÷[(0.68+3.72÷1
| 3 |
| 5 |
| 10 |
| 13 |
=108÷[(0.68+2.325-68%)×
| 10 |
| 13 |
=108÷[(0.68-68%+2.325)×
| 10 |
| 13 |
=108÷[2
| 13 |
| 40 |
| 10 |
| 13 |
=108÷[(2+
| 13 |
| 40 |
| 10 |
| 13 |
=108÷[2×
| 10 |
| 13 |
| 13 |
| 40 |
| 10 |
| 13 |
=108÷(
| 20 |
| 13 |
| 1 |
| 4 |
=108÷
| 93 |
| 52 |
=
| 1872 |
| 31 |
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