影儿 | 发布日期:2010-09-08 19:11:44
1①56,②-60③-1.16④-6.1⑤-0.1⑥6 2:①-2/9 ②1/4 ③ -170/3 ④3/7 3: ①-1/15 ②-9/5 ③-4 ④100/17 ⑤4/17 ⑥-5/27 4;①-7 ②4 ③-16/3 ④3 ⑤-4/5 ⑥-2/3 5:-5;-1/5 ;-4;6;5;1/5;-6;4; 6:①-3;②-1/12;③27/4;④20 7:①24;②-210;③16/5;④100;⑤-1/2;⑥33/28;⑦0;⑧-11 8:①13;②20.7 10:①7500;②-140;③200;④-120 11:450+20×60-12×120=210 12:①<;<;②<,<;③>,>;④=,= 13:不一定 14:a |