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一、口算。
$1.86×7= $
$4.32+5.43= $
$1.02÷0.5= $
$0.49÷1.4= $
$4.6×6= $
$18.75+2.65= $
$0.8×1.5= $
$72.8÷0.8= $
$3.06×0.3= $
$1.8+4.4= $
$1.34+1.8= $
$0.93÷0.3= $
$1.25×0.2= $
$3.08×0.4= $
$4.32÷8= $
$6.4×0.3= $
$2.5÷50= $
$13.7×0.2= $
$5.4÷0.18= $
$0.14×60= $
$15-4.75= $
$2.7+0.33= $
$750÷1.5= $
$0.24×0.8= $
$1.86×7= $
13.02
$4.32+5.43= $
9.75
$1.02÷0.5= $
2.04
$0.49÷1.4= $
0.35
$4.6×6= $
27.6
$18.75+2.65= $
21.4
$0.8×1.5= $
1.2
$72.8÷0.8= $
91
$3.06×0.3= $
0.918
$1.8+4.4= $
6.2
$1.34+1.8= $
3.14
$0.93÷0.3= $
3.1
$1.25×0.2= $
0.25
$3.08×0.4= $
1.232
$4.32÷8= $
0.54
$6.4×0.3= $
1.92
$2.5÷50= $
0.05
$13.7×0.2= $
2.74
$5.4÷0.18= $
30
$0.14×60= $
8.4
$15-4.75= $
10.25
$2.7+0.33= $
3.03
$750÷1.5= $
500
$0.24×0.8= $
0.192
答案
一、13.02 9.75 2.04 0.35 27.6 21.4 1.2 91 0.918 6.2 3.14 3.1 0.25 1.232 0.54 1.92 0.05 2.74 30 8.4 10.25 3.03 500 0.192
二、用竖式计算。
$2.9×7.6$
$13÷0.325$
$12×0.067$
$37.41÷0.43$
$0.49×0.17$
$10.71÷1.8$
(得数保留一位小数)
$2.9×7.6$
$13÷0.325$
$12×0.067$
$37.41÷0.43$
$0.49×0.17$
$10.71÷1.8$
(得数保留一位小数)
答案
二、22.04 40 0.80 87 0.0833 6.0
解析
```
2.9
×7.6
----
174
203
----
22.04
40
0.325)13000
1300
----
0
12
×0.067
----
84
72
----
0.804≈0.80
87
0.43)37.41
344
---
301
301
---
0
0.49
×0.17
----
343
49
----
0.0833
5.95
1.8)10.71
90
--
171
162
---
90
90
---
0≈6.0
```
22.04
40
0.80
87
0.0833
6.0
2.9
×7.6
----
174
203
----
22.04
40
0.325)13000
1300
----
0
12
×0.067
----
84
72
----
0.804≈0.80
87
0.43)37.41
344
---
301
301
---
0
0.49
×0.17
----
343
49
----
0.0833
5.95
1.8)10.71
90
--
171
162
---
90
90
---
0≈6.0
```
22.04
40
0.80
87
0.0833
6.0
