- 2 -小学数学简便运算练习 姓名_ (12+) 7 1600325 36 389999+999+99+9 999999+999 0.326.7+3.20.33 4821-998 1.2588 3.60.25 1.019.6 2.69.9 1.8991.8 3.89.90.38 31+ 88887+111144 + 7(2/7+3/8) 8 0.6710.16.7 38（1/3+1/8） 1/59+1/58/9 1.57.4+0.6150%+2 5.34+2.725% 5.61.70.5683 13.527+13.572+13.5 2821.62.8162