预备一班41人共存123.5元,预备二班40人每人存4元,两班平均每人存多少元?
简便运算①6.2×10.1 ②1.25×32×0.25 ③35.4×44.2﹣35.3×44.3.
101×38.
用简便方法算下面各题.4.8+25.36+17.2+14.64 (400﹣2)×25 125×27×834×23+77×34 41.2﹣1.47﹣9.53 37×99.
865﹣498.
用简便方法计算.125×27×835×1025300÷4÷2565.29﹣3.81﹣6.1934×58+66×58.