题目内容

直接写出得数．
7
9
-
4
9
=
1
10
+
3
10
=
3
8
+
5
8
=
5
6
-
1
6
=
2
3
-
1
4
=
1
2
-
1
3
=		1-
2
7
=
1
2
+
1
6
=
7
9
-
4
9
=
1
3
1
10
+
3
10
=
2
5
3
8
+
5
8
=1
5
6
-
1
6
=
2
3
2
3
-
1
4
=
5
12
1
2
-
1
3
=
1
6
1-
2
7
=
5
7
1
2
+
1
6
=
2
3
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相关题目
计算下面各题．
4
8
+
5
12
3
4
-
1
3
+
2
5
5
12
+
1
7
-
4
12
7
10
+
3
10
+
3
4
10
19
+
5
38
-
7
19
5
23
+(
7
12
-
5
23
)．
分母相同的分数相加减，______不变，______相加减．分母不同的分数相加减，先______，再______．
111+89=3.6-0.6=1.5×6=7.2÷0.9=
1
3
+
1
4
=
1
2
-
1
5
=
2
7
×
7
8
=
4
7
÷
2
5
=
按要求填数：______+______=
11
12
（填两个分母小于12的分数）
1
()
+
1
()
=
1
5
（填两个不同的整数）．
直接写出得数
4
7
8
+
1
8
=
2
1
5
-
2
5
=
8.3÷10%=
2
1
5
×3=
1
1
7
÷8=
0×2
1
8
÷
1
3
=
直接写出得数．
1
4
+
1
5
=		10-5.75=7÷0.01=
3
5
×
1
6
=		1.7×5.4×0=
54+49+46=6298÷70=（
1
5
+
1
6
）×30=		1×（
1
3
-1÷3）=
1
2
-
1
2
×
1
3
=
口算
1
5
+
3
5
=		1-
1
3
=
1
4
+
3
4
=
1
8
+
5
8
=
5
6
-
2
3
=
7
9
-
2
9
=
11
12
-
1
12
=
7
15
-
2
15
=
13
20
-
9
20
=
9
14
-
5
14
=
直接写得数．
2
3
+
1
2
=
5
6
×18=
7
8
-
1
2
=
1
3
×
3
4
×8=
2
5
×
3
4
=
5
11
÷6=
4
5
÷
5
6
=		（
5
8
+
2
3
）×24=
4
5
÷
5
4
=		24×25%0÷
3
5
1
4
×
1
3
÷
1
3
×
1
4
=

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