题目内容
用递等式计算.
60-25×4.5×0.4
3×(150-1530÷15)
÷[(
+
)×
].
60-25×4.5×0.4
3×(150-1530÷15)
| 8 |
| 9 |
| 2 |
| 5 |
| 1 |
| 10 |
| 3 |
| 4 |
60-25×4.5×0.4,
=60-25×0.4×4.5,
=60-10×4.5,
=60-45,
=15.
3×(150-1530÷15),
=3×(150-102),
=3×48,
=144.
÷[(
+
)×
],
=
÷[(
+
)×
],
=
÷[
×
],
=
÷
,
=
×
,
=
.
=60-25×0.4×4.5,
=60-10×4.5,
=60-45,
=15.
3×(150-1530÷15),
=3×(150-102),
=3×48,
=144.
| 8 |
| 9 |
| 2 |
| 5 |
| 1 |
| 10 |
| 3 |
| 4 |
=
| 8 |
| 9 |
| 4 |
| 10 |
| 1 |
| 10 |
| 3 |
| 4 |
=
| 8 |
| 9 |
| 1 |
| 2 |
| 3 |
| 4 |
=
| 8 |
| 9 |
| 3 |
| 8 |
=
| 8 |
| 9 |
| 8 |
| 3 |
=
| 64 |
| 27 |
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