15/2×5/9+4/7+11/5×6/5
15/2×5/9+4/7+11/5×6/5
15/2*5/9+4/7+11/5*6/5简算(急!)
15/2乘5/9+4/7+11/5除以6/5(简便运算)
2分之15*9分之5+7分之4+5分之11*5分之6
4/5+[7/8-4/5] 7/10-[2/15+1/6] 1-1/3-1/7 5/6+11/14 5/6-[4/9-1
(6/5+9/11+1又5/7)/(3/11+2/5+4/7)简便计算
9/2×5/3 7/6×9/7 8/5×15/4 20/9×21/5
计算下面各题,能简算的要简算.15/2 * 5/9 + 4/7 + 11/5 * 6/5 =
找规律 1 2 6 7 ( ) 3 5 ( ) 13 15 4 9 ( ) ( ) ( ) 10 11 17 ( ) 2
用简便方法计算:5/6-4/9+1/6-2/9=?13/15-7/112/15+6/11=?7/15-1/4+8/15-
1*3+2*5+3+9+4*11+5*13+6*15+7*17+8*19+9*21+10*23
1+2+3+4+5+6+7+8+9+1+11+12+13+14+15````````