Question

直接写出得数 5 6 + 1 6 =	2 5 + 3 5 =	1 4 + 1 5 =	7- 5 6 =
2 3 - 5 9 =	6-1.8=	0+2 1 4 =	3 8 + 1 4 =
1 5 +0.6=	1 2 + 2 7 =	5 7 - 1 3 =	2 3 - 1 6 =
1 6 + 2 3 =	1- 5 9 =	1- 11 15 =	1 2 - 1 5 =

Answer 1

分析：根据分数和小数加减法的计算方法进行计算．

解答：解：

5 6 + 1 6 =1	2 5 + 3 5 =1	1 4 + 1 5 = 9 20	7- 5 6 =6 1 6
2 3 - 5 9 = 1 9	6-1.8=4.2	0+2 1 4 =2 1 4	3 8 + 1 4 = 5 8
1 5 +0.6=0.8	1 2 + 2 7 = 11 14	5 7 - 1 3 = 8 21	2 3 - 1 6 = 1 2
1 6 + 2 3 = 5 6	1- 5 9 = 4 9	1- 11 15 = 4 15	1 2 - 1 5 = 3 10

点评：口算时，注意运算符号和数据，然后再进一步计算．