题目内容

计算：
2.5×40=
18×6=
1.73+2.07=
10-0.9=
400÷4=
1
2
+
1
2
=
2
3
-
1
3
=
1
5
+
1
4
=
3
4
-
1
2
=
1
6
-
1
7
=
2.5×40=100，
18×6=108，
1.73+2.07=3.8，
10-0.9=9.1，
400÷4=100，
1
2
+
1
2
=1，
2
3
-
1
3
=
1
3
，
1
5
+
1
4
=
9
20
，
3
4
-
1
2
=
1
4
，
1
6
-
1
7
=
1
42
．
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相关题目
直接写出得数
0.4-
1
7
=
5
7
÷
3
5
=
5
6
÷0.1=		6×
6
7
-5×
5
7
=
5
7
×
5
7
÷
5
7
×
5
7
=
8.4-2.8-3.2=63×（
1
7
-
1
9
）=		1÷
1
5
-
1
5
÷1=		8×2.7×1
1
4
=		0.5+
1
4
=
直接写出得数
3
4
÷
5
6
=
1
3
÷3=		6×
5
12
=
5
8
-
1
4
=
7÷
7
9
=
3
4
+
1
2
=
2
21
×7=
10
7
÷
5
21
=
直接写得数．
1
3
-
1
4
=
1
4
+
3
8
=
2
5
×30=
5
6
÷5=		2÷
2
3
=
470-407=13×50=8.64-5.04=500÷25=4.57+5.43=
5
6
比
1
6
多______个
1
6
．
直接写得数．
5
7
-
3
7
=
1
3
-
1
5
=
5
12
+
1
6
=
3
5
+
1
10
=
1-
1
2
-
1
4
=
17
12
-
1
6
-
5
6
=
8
9
-
1
3
=
4
9
+
7
9
=
直接写得数
1
3
÷
1
12
=
4
7
÷12=
8
9
÷
3
7
=		1÷
3
4
=
5÷
10
11
=
11
14
÷21=
5
8
÷
5
6
=
9
10
÷
3
5
=
8
9
÷
8
3
=
3
10
÷
10
3
=
1
5
×
5
8
=
1
3
-
1
4
=
计算：3
4
5
-2
3
5
=______．
从
9
11
中减去几后得
3
11
？

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