题目内容
直接写出得数
-
=
+
=
1-
=
+
=
+
=
-1=
-
=
-
=
| 3 |
| 4 |
| 1 |
| 4 |
| 1 |
| 5 |
| 7 |
| 10 |
1-
| 3 |
| 5 |
| 1 |
| 4 |
| 1 |
| 7 |
| 4 |
| 9 |
| 5 |
| 9 |
| 10 |
| 7 |
| 1 |
| 3 |
| 1 |
| 4 |
| 5 |
| 6 |
| 1 |
| 2 |
分析:第①⑤属于同分母分数的加减法,只把分子相加减,分母不变;
第②④⑦⑧属于异分母分数的加减法,先通分,再计算;
第③⑥题,属于整数与分数的加减法,把整数化为分数,再计算.
第②④⑦⑧属于异分母分数的加减法,先通分,再计算;
第③⑥题,属于整数与分数的加减法,把整数化为分数,再计算.
解答:解:
-
=
;
+
=
;
1-
=
;
+
=
;
+
=1;
-1=
;
-
=
;
-
=
;
故答案为:
,
,
,
,1,
,
,
.
| 3 |
| 4 |
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 5 |
| 7 |
| 10 |
| 9 |
| 10 |
1-
| 3 |
| 5 |
| 2 |
| 5 |
| 1 |
| 4 |
| 1 |
| 7 |
| 11 |
| 28 |
| 4 |
| 9 |
| 5 |
| 9 |
| 10 |
| 7 |
| 3 |
| 7 |
| 1 |
| 3 |
| 1 |
| 4 |
| 1 |
| 12 |
| 5 |
| 6 |
| 1 |
| 2 |
| 1 |
| 3 |
故答案为:
| 1 |
| 2 |
| 9 |
| 10 |
| 2 |
| 5 |
| 11 |
| 28 |
| 3 |
| 7 |
| 1 |
| 12 |
| 1 |
| 3 |
点评:此题考查了分数的加减法计算,掌握计算方法,是解决的关键.
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