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一、直接写出得数。(每题1分,共32分)
3.6+4=
9.1+0.8=
1-0.45=
5-2.6-0.4=
7-5.4=
0.4+1.3=
3.4-0.7=
7.5-0.5+2.6=
3.8+3.2=
7.2-0.8=
10-0.09=
1.2+0.3+0.7=
8.7-2.6=
4.7-0.9=
304×30=
4.5+2.1+2.9=
465÷5=
3.9+2.7=
0.64-0.6=
0.9+0.8-0.3=
5.5+0.5=
448÷14=
7.43+0.6=
3.7+8.3-8.3=
3.4-0.8=
9.9-4.1=
2.9-0.86=
7.9-4.3+0.6=
300×40=
2.6+2.7=
21.6-0.95=
13.5-0.6+0.4=
3.6+4=
7.6
9.1+0.8=
9.9
1-0.45=
0.55
5-2.6-0.4=
2
7-5.4=
1.6
0.4+1.3=
1.7
3.4-0.7=
2.7
7.5-0.5+2.6=
9.6
3.8+3.2=
7
7.2-0.8=
6.4
10-0.09=
9.91
1.2+0.3+0.7=
2.2
8.7-2.6=
6.1
4.7-0.9=
3.8
304×30=
9120
4.5+2.1+2.9=
9.5
465÷5=
93
3.9+2.7=
6.6
0.64-0.6=
0.04
0.9+0.8-0.3=
1.4
5.5+0.5=
6
448÷14=
32
7.43+0.6=
8.03
3.7+8.3-8.3=
3.7
3.4-0.8=
2.6
9.9-4.1=
5.8
2.9-0.86=
2.04
7.9-4.3+0.6=
4.2
300×40=
12000
2.6+2.7=
5.3
21.6-0.95=
20.65
13.5-0.6+0.4=
13.3
答案
7.6 9.9 0.55 2 1.6 1.7 2.7 9.6 7 6.4 9.91 2.2 6.1 3.8 9120 9.5 93 6.6 0.04 1.4 6 32 8.03 3.7 2.6 5.8 2.04 4.2 12000 5.3 20.65 13.3
二、用竖式计算,带☆的要验算。(每题3分,验算1分,共19分)
28.3+9.56=
☆40.36+19.75=
123-5.97=
57.4-3.09=
40-35.65=
86.7+29.37=
28.3+9.56=
37.86
☆40.36+19.75=
60.11
123-5.97=
117.03
57.4-3.09=
54.31
40-35.65=
4.35
86.7+29.37=
116.07
答案
37.86 60.11 117.03 54.31 4.35 116.07 竖式及验算略
解析
```
28.30
+ 9.56
------
37.86
40.36
+ 19.75
------
60.11
验算：
60.11
19.75
------
40.36
123.00
5.97
------
117.03
57.40
3.09
------
54.31
40.00
35.65
------
4.35
86.70
+ 29.37
------
116.07
```
28.30
+ 9.56
------
37.86
40.36
+ 19.75
------
60.11
验算：
60.11
19.75
------
40.36
123.00
5.97
------
117.03
57.40
3.09
------
54.31
40.00
35.65
------
4.35
86.70
+ 29.37
------
116.07
```
