Question

直接写出得数 1- 1 3 =	1 2 - 1 3 =	6× 2 3 =	3 5 ÷12=
9 10 × 5 6 =	5 8 ÷ 1 2 =	1 10 ÷ 1 100 =	4 5 ×0× 4 5 × 1 4 =

Answer 1

分析：根据分数加减乘除法的计算方法进行计算．

解答：解：

1- 1 3 = 2 3	1 2 - 1 3 = 1 6	6× 2 3 =4	3 5 ÷12= 1 20
9 10 × 5 6 = 3 4	5 8 ÷ 1 2 = 5 4	1 10 ÷ 1 100 =10	4 5 ×0× 4 5 × 1 4 =0

点评：口算时，注意运算符号和数据，然后再进一步计算．