题目内容
递等式计算.
(1)16-3.25×0.6+3.05
(2)
×0.5+2.5÷125%
(3)
÷[(
+
)×
]
(4)2
+3.6×〔(3
-1
)÷3.5〕
(1)16-3.25×0.6+3.05
(2)
| 1 |
| 8 |
(3)
| 1 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 1 |
| 13 |
(4)2
| 2 |
| 5 |
| 1 |
| 12 |
| 5 |
| 8 |
(1)16-3.25×0.6+3.05
=16-1.95+3.05
=14.05+3.05
=17.1;
(2)
×0.5+2.5÷125%
=0.125×0.5+2.5÷1.25
=0.0625+2
=2.0625;
(3)
÷[(
+
)×
]
=
÷[(
+
)×
]
=
÷[
×
]
=
÷
=
×15
=3;
(4)2
+3.6×[(3
-1
)÷3.5]
=2
+3.6×[(
-
)÷
]
=2
+3.6×[
×
]
=2
+
×
=2.4+
=2.4+1.5
=3.9.
=16-1.95+3.05
=14.05+3.05
=17.1;
(2)
| 1 |
| 8 |
=0.125×0.5+2.5÷1.25
=0.0625+2
=2.0625;
(3)
| 1 |
| 5 |
| 2 |
| 3 |
| 1 |
| 5 |
| 1 |
| 13 |
=
| 1 |
| 5 |
| 10 |
| 15 |
| 3 |
| 15 |
| 1 |
| 13 |
=
| 1 |
| 5 |
| 13 |
| 15 |
| 1 |
| 13 |
=
| 1 |
| 5 |
| 1 |
| 15 |
=
| 1 |
| 5 |
=3;
(4)2
| 2 |
| 5 |
| 1 |
| 12 |
| 5 |
| 8 |
=2
| 2 |
| 5 |
| 74 |
| 24 |
| 39 |
| 24 |
| 7 |
| 2 |
=2
| 2 |
| 5 |
| 35 |
| 24 |
| 2 |
| 7 |
=2
| 2 |
| 5 |
| 18 |
| 5 |
| 5 |
| 12 |
=2.4+
| 3 |
| 2 |
=2.4+1.5
=3.9.
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