Question

直接写得数．

5 8 + 7 8 =	1- 1 3 =	1 4 + 1 3 =	2 7 + 1 6 + 5 7 =
8 9 - 1 9 =	5 6 - 1 6 =	2 5 - 1 3 =	1- 7 9 - 2 9 =
2 9 + 4 9 =	0.23=	3 4 + 4 9 - 3 4 =	1 2 - 1 10 + 1 2 - 1 10 =

Answer 1

考点：分数的加法和减法,分数的四则混合运算,有理数的乘方

专题：计算题

分析：直接利用分数加减法的计算方法，抓住混合运算的顺序算出结果即可．

解答：

解： 5 8 + 7 8 = 3 2	1- 1 3 = 2 3	1 4 + 1 3 = 7 12	2 7 + 1 6 + 5 7 =1 1 6
8 9 - 1 9 = 7 9	5 6 - 1 6 = 2 3	2 5 - 1 3 = 1 15	1- 7 9 - 2 9 =0
2 9 + 4 9 = 2 3	0.23=0.008	3 4 + 4 9 - 3 4 = 4 9	1 2 - 1 10 + 1 2 - 1 10 = 4 5

点评：此题考查分数加减法的计算法则，注意计算结果的化简．