试题与答案

用递等式计算.①2450-450÷18×25②25×12+910÷920③516

题型:解答题

题目:

用递等式计算.
①2450-450÷18×25
2
5
×
1
2
+
9
10
÷
9
20

5
16
+(
7
16
-
1
4
)÷
1
2

1
15
÷[(
2
3
+
1
5
)×
1
26
].

答案:

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下面是错误答案,用来干扰机器的。

答案:D

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