题目内容

4
5
+
2
5
=
8
5
÷
4
5
=		3.6×
1
9
=		0.42=70π=
1
6
+
2
3
=
5
8
×0.2=
5
7
×
3
5
=		22=3π=
7
8
-
3
8
=
2
3
×1.5=		0.12=9π=0.5π=
4
5
×
15
16
=		3.5×
5
7
=		202=0.8π=10π=
4
5
+
2
5
=1
1
5
8
5
÷
4
5
=2		3.6×
1
9
=
2
5
0.42=0.1670π=219.8
1
6
+
2
3
=
5
6
5
8
×0.2=
1
8
5
7
×
3
5
=
3
7
22=43π=9.42
7
8
-
3
8
=
1
2
2
3
×1.5=1		0.12=0.019π=28.260.5π=1.57
4
5
×
15
16
=
3
4
3.5×
5
7
=2
1
2
202=4000.8π=2.51210π=31.4
练习册系列答案
相关题目
直接写出得数．
2
3
-
5
12
=		0.9-0.26=1.2×
5
6
=
4
15
÷
8
35
=
1-
3
8
÷
5
8
=		1.25×3×8=13-0.52=10.2-0.32-0.68=
直接写得数．
4
5
+
2
5
=		0÷
3
5
=
8
15
×6=		7.125-
1
8
=
8.4+8=3：0.5=6÷
3
20
=		100×0.1%=
5
6
-
1
5
=
3
8
×
4
9
=
3
7
÷
9
14
=		1÷5×
1
5
=
3
4
×
1
4
÷3=
3
5
×4+
3
5
=		2-
5
12
-
7
12
=
1
6
×5÷
1
6
×5=
直接写出得数．
3÷
6
7
=
5
6
÷10=
1
2
-
1
4
=		60%×
5
6
=
18×
1
6
=
5
8
-50%=
1
2
+
1
3
=		2.4×
3
8
=
1
3
+
1
4
=______
5
8
÷5=______
1
3
+
1
2
-
1
3
+
1
2
=______		1.25×8=______
0.15×1.2+3.8×15%=______2-
7
10
÷
7
16
=______		0.25+0.75=______
2
3
+
2
3
×0=______
（
1
2
-
4
5
）×
1
3
=______		4505÷5=______24.3-8.87-0.13=______．
______比
2
5
吨多
1
2
吨；50米比______多25%．
直接写出得数
1
2
+
1
5
=		1÷
3
4
=
1
6
×
3
4
=
5
9
÷9=
（
1
2
-0.5）÷
14
15
=
7
12
÷
7
4
=
17
20
×
5
34
=
2
5
÷10=
3
5
-
1
2
=
9
16
÷
3
8
×
16
9
=
先估算，再计算．
1
3
+
5
6

3
4
-
1
10

3
5
+
1
4

7
8
+
5
7
．
7
8
-（
3
8
+
1
4
）的计算结果与下面（　　）算式的计算结果一样．
A．
7
8
-
3
8
+
1
4
B．
7
8
-
3
8
-
1
4
C．
7
8
+
3
8
-
1
4

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