计算1.307+301+313+316+319+322+325 2.1991-1988+1985-1982+……+11-8+5-2
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![计算1.307+301+313+316+319+322+325 2.1991-1988+1985-1982+……+11-8+5-2](/uploads/image/z/8307916-52-6.jpg?t=%E8%AE%A1%E7%AE%971.307%2B301%2B313%2B316%2B319%2B322%2B325+2.1991-1988%2B1985-1982%2B%E2%80%A6%E2%80%A6%2B11-8%2B5-2)
计算1.307+301+313+316+319+322+325 2.1991-1988+1985-1982+……+11-8+5-2
计算1.307+301+313+316+319+322+325 2.1991-1988+1985-1982+……+11-8+5-2
计算1.307+301+313+316+319+322+325 2.1991-1988+1985-1982+……+11-8+5-2
1、原式=307+313+301+319+316+322+325
=620+620+316+322+325
=1240+628+325
=1868+325
=2193
2、原式=3+3+3+……+3(664个3)
=3×664
=1992