题目内容

直接写出得数：
7
10
-
1
10
-
3
10
=
11
6
-
7
6
-
1
6
=		1-
2
3
-
1
3
=
2
9
+
1
2
=
6
7
-
2
3
=
3
10
+
1
4
=
3
7
+
1
9
=
1
3
-
1
5
=
1
6
+
1
4
=
5
7
-
1
5
=
7
10
-
1
10
-
3
10
=
3
10
11
6
-
7
6
-
1
6
=
1
2
1-
2
3
-
1
3
=0
2
9
+
1
2
=
13
18
6
7
-
2
3
=
4
21
3
10
+
1
4
=
11
20
3
7
+
1
9
=
34
63
1
3
-
1
5
=
2
15
1
6
+
1
4
=
5
12
5
7
-
1
5
=
18
35
．
练习册系列答案
相关题目
直接写得数．
3
4
-
2
3
=
6
7
×
7
9
=
5
11
×44=
11
12
÷22=		4.5×10%=
4
3
÷
2
3
=
5
8
÷
5
12
=
7
4
-1.25=		1.5+
3
2
=
1
4
X-
1
6
X=
8.75-(1
3
4
+2
2
9
)．
直接写得数：
1
3
+
1
4
=		1-
1
5
=
3
4
×
4
9
=
1
4
+25%=
2
3
÷8=		4×25%=0.36÷36%=1-20%-
3
5
=
直接写出得数
400×6=
55÷9=
8
9
-
5
9
=
1
6
+
5
6
=
口算下面各题．
1
9
+
4
9
=
7
8
-
2
8
=
3
6
+
2
6
=
5
7
-
2
7
=		6.4+2.3=7.3-0.4=
1.1+2.8=707÷7=360÷3=93÷3=40×25=720÷4=
80-25=36×0=
直接写得数：
4
9
+
1
9
=		1-
1
3
=
5
8
+
3
8
=
4
5
-
3
5
=
289×6≈503×8≈200×8=40×5=
1
4
+
2
4
=		1-
1
8
=
3
8
+
5
8
=
9
10
-
3
10
=
7
9
-
4
9
=		1-
5
7
=
5
6
+
1
6
=
3
5
-
2
5
=
师傅加工零件数比徒弟多
1
8
，则徒弟与师傅加工零件数的比是7：8．______．

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