题目内容

1
3
+
5
9
=
5
8
-
3
16
=
1
2
×
4
7
=
1
4
+
1
3
=		8-
5
6
=
9×
2
3
=
5
12
×
3
4
=
2
7
×4=
4
21
×
7
8
=
5
9
-
1
3
=
1
3
+
5
9
=
8
9
5
8
-
3
16
=
7
16
1
2
×
4
7
=
2
7
1
4
+
1
3
=
7
12
8-
5
6
=7
1
6
9×
2
3
=6
5
12
×
3
4
=
5
16
2
7
×4=
8
7
4
21
×
7
8
=
1
6
5
9
-
1
3
=
2
9
．
练习册系列答案
相关题目
1-
3
7
=
1
3
+
1
3
=
4
5
-
2
5
=
1
2
+
1
2
=
7
9
-
5
9
=
3
5
+
2
5
=
2
7
+
4
7
=
2
9
+
5
9
=
1
a
-
1
b
+
1
c
＞
1
a
-（
1
b
+
1
c
）（a、b、c均不为0）______（判断对错）
直接写出得数．
1
4
+
1
4
=
1
7
×
14
15
=
7
8
-
3
8
=
2
7
÷7=
1
2
÷
1
3
=
3
4
×
2
5
×
4
3
=
8×
3
8
+8×
1
8
=		55×
1
11
=
1
2
×
1
3
÷
1
2
=		0×
7
12
+
1
8
=
相同分母的分数相加减，分母______，______相加减．
（1）3
1
4
+3
1
4
=______；
（2）2
7
9
-1
7
9
=______．
脱式计算（能简算的要简算）
2
3
+
2
5
+
3
5
1
4
+
1
6
+
5
12
5
7
-
1
2
+
1
7
1-
2
11
-
9
11
．
解方程：8
2
7
-x=3
1
3
-3
5
7
．
1
2
+
1
3
=______．

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