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脱式计算36×（13+16-19）79÷135+29×51313×5+15×7+17×9+19×11+111×13+113×1520-[（12+13）÷56]×1.2
题目详情
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▼优质解答
答案和解析
（1）36×（13+16-19）=36×13+36×16-36×19=12+6-4=18-4=14；（2）79÷135+29×513=（79+29）×513=1×513=513；（3）13×5+15×7+17×9+19×11+111×13+113×15=12×[（13-15）+（15-17）+（17-19）+（19-111）+...
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