题目内容

直接写得数．

(15－7)×5＝　　　　72÷(5＋4)＝

答案：40;8
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（2011?新邵县）直接写得数
1
3
×15=
5
6
×
3
10
=
8
9
÷4=
(
2
3
)3=
5
8
÷
5
12
=		 1÷
7
5
×
5
7
=
直接写得数
5
9
×15=
3
5
×2=
1
4
×
4
5
=
1
9
×
3
7
=
7
12
×
3
4
=
1×
3
20
=
2
5
×
15
4
=
4
17
×34=
8
21
×
7
16
=
1
20
×
2
3
=
3
4
×
1
5
=
5
6
×
2
15
=
5
6
÷10=
6
13
÷
5
26
=		 0÷
5
8
=
8
9
÷4=		 1÷
2
3
=		 22÷
11
12
=
9
53
÷
9
53
=
2
5
÷0.4=
直接写得数．
15×
4
5
=
2
3
-
1
2
=
38÷4= 1-0.25=
2.7+85%= 9÷
1
4
=
0.23×400=
3
8
+
1
2
=
0.72÷0.6= 1.25×2.4=
直接写得数
3-
1
5
=
3
2
÷
2
3
=
8
9
×
3
4
=
0.23=
1÷7×
1
7
=
1
6
×
1
5
÷
1
6
×
1
5
=
1
3
+
1
5
=
直接写得数．
15×20=		 147÷7= 40×70= 4×180=
49×11≈ 161×40≈ 21×19≈ 401×26≈

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