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用递等式计算,能简算的简算2506-10517÷13+14×106[0.8+0.75×(0.65-0.25)]÷0.01455×7.6+112÷538+43.3×7611+11+2+11+2+3+…+11+2+3+…+50.
题目详情
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38 |
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1+2+3+…+50 |
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1+2+3+…+50 |
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▼优质解答
答案和解析
(1)2506-10517÷13+14×106,=2506-809+1484,=1697+1484,=3181;(2)[0.8+0.75×(0.65-0.25)]÷0.01,=[0.8+0.75×0.4]÷0.01,=[0.8+0.3]÷0.01,=1.1÷0.01,=110;(3)455×7.6+112÷538+43.3×76,=455...
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