题目内容
用递等式计算.
| 1000-4920÷24 | 1.1×(20-19.3)+2.1 |
|
(1)1000-4920÷24,
=1000-205,
=795;
(2)1.1×(20-19.3)+2.1,
=1.1×0.7+2.1,
=0.77+2.1,
=2.87;
(3)
÷[(
+
)×
],
=
÷[
×
],
=
÷
,
=
.
=1000-205,
=795;
(2)1.1×(20-19.3)+2.1,
=1.1×0.7+2.1,
=0.77+2.1,
=2.87;
(3)
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