题目内容

直接写出得数．
2
3
+
1
4
=		3-
5
6
=		8.7-4.8=1.25×2.4=
9.3：0.03=38÷4=
3
4
×
8
9
=		1÷3×
1
3
=
2
3
+
1
4
=
11
12
，		3-
5
6
=2
1
6
，		8.7-4.8=3.9，1.25×2.4=3，
9.3：0.03=310，38÷4=9.5，
3
4
×
8
9
=
2
3
，		1÷3×
1
3
=
1
9
．
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相关题目
计算．
4
5
+
4
7
8
9
-
3
4
2
3
+
7
15
4
7
+
1
8
5
6
-
5
8
3
4
+
1
5
．
我们知道：相同分母的分数相减，分母______，分子______．
直接写出得数．
2
3
-
1
9
=		34+18=52-4=0÷
1
3
=
0.6×100=13-9=7.31+0.7=
5
8
×48=
10-3.9=0.52=
3
26
×
13
48
=		26×5=
2-
1
4
=		5÷2%=
4
17
÷
1
4
=		6÷
3
4
=
7.5+4.5=
3
5
-
1
2
=		4÷0.2=0.375÷3=
20÷8=
直接写得数．
1
2
+
1
4
=
1
3
-
1
6
=
7
15
×
5
7
=
5
8
÷10=
3
4
×
8
9
=		（
1
3
）3=
直接写出得数．
1
6
+
5
6
=
3
7
+
3
7
=
1
8
+
5
8
=
9
10
-
3
10
=
1-
4
9
=
1
8
+
1
4
=
1
3
-
1
4
=
1
2
+
1
3
=
直接写出得数．
1
3
+
2
5
=
2
3
-
2
5
=
3
4
+
3
8
=
1
2
+
1
6
=
3
5
×
7
9
=
12
7
×
14
15
=
4
7
÷
8
14
=
5
9
÷
5
6
=
1.5×0.4=10÷2.5=2.4×5=0.78÷1.3=
直接写出得数．
4
7
-
3
28
=
5
6
÷6=
1
2
÷
2
5
=		6×
2
3
=
2
3
×
3
8
=
3
7
-
1
6
=
9
10
×
5
7
=
5
12
÷
5
6
=
1
3
与
1
4
的和的倒数是______．

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