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1、Four short words sum up what has lifted most successful individuals above the crowd: a little bit more.-author-date初一七年级四则混合运算70题四则混合运算和解方程练习初一七年级四则混合运算70题4-(2.5+1.9)(0.5-0.5) 4-2.5+1.9(0.5-0.5) 4-2.5+1.90.5-0.5 4-(2.5+1.90.5)-0.54-(2.5+1.9) (0.5-0.5) 4-(2.5+1.9) 0.5-0.512-4-2-5-12.5% 0.125+8.25+12.
2、5%(+) 2.50.42 15-2.25-7 10(-0.5) (2.7-4.25)2.8 +(-)1.25+17.4+125% 10-4.687.2+0.05 1(5-5) 18.09(1.5+2)3.75-0.840.3(1.9618.9) -(0.15+) 1.81325+5401815 2.58+9.5+40.125 2.1+7(3-1.625) 12.5-2.1+9.63 (7+72+7)43.8+1+6.2+3(4-3.5) (2+-1)122.58+3.5+0.125(9.5+9+9+9.5) 12 3-(1+1)1(0.05+)0.25-125% 5.350.25+2.65(3+-2)(180%) 4.20.7+6) (1) (- ) 4 1- - () () 【()】 () () 【()】 3 50.125 ()88 1348() ()() 7 【1()】 ()12 2 99 45() () 4() -