1、说出下面各题的运算顺序,再计算.
203-134÷2 1 97-【12×6+43】 26×4-125÷5
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(95-19×5)÷74 (270+180)÷30-15)
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118+1536÷[12×(63-59)] [60+240÷(30-10)]×2
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[(60+240÷30)-10]×2 (60+240)÷[(30-10)×2]
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2、 根据每一组算式列出综合算式:
32+17=49 34×13=442
49×14=686 459-442=17