(一)直接写出得数。
1.9+9=
8+1.25=
0.64+2.7+1.6=
1.62+2.38=
10-3.62=
3.2+6.75+4.8=
2.3-1.5=
1.8+0.7=
2.5-1.6+1.1=
3.25+1.75=
6.35+4.65=
8.73-3.6-2.4=
4.6+2.7=
5.35+3.27=
8.26-5.7+1.74=
10.8-8.72=
16.25-8.12=
4.3+8.6-2.6=
5.5-3.7=
12.29-10.29=
5.5-0.85+1.5=
5.16+1.84=
5.83+3.17=
6.3-(4.2-3.7)=
1.9+9=
8+1.25=
0.64+2.7+1.6=
1.62+2.38=
10-3.62=
3.2+6.75+4.8=
2.3-1.5=
1.8+0.7=
2.5-1.6+1.1=
3.25+1.75=
6.35+4.65=
8.73-3.6-2.4=
4.6+2.7=
5.35+3.27=
8.26-5.7+1.74=
10.8-8.72=
16.25-8.12=
4.3+8.6-2.6=
5.5-3.7=
12.29-10.29=
5.5-0.85+1.5=
5.16+1.84=
5.83+3.17=
6.3-(4.2-3.7)=
答案
1.9+9=10.9
8+1.25=9.25
0.64+2.7+1.6=4.94
1.62+2.38=4
10-3.62=6.38
3.2+6.75+4.8=14.75
2.3-1.5=0.8
1.8+0.7=2.5
2.5-1.6+1.1=2
3.25+1.75=5
6.35+4.65=11
8.73-3.6-2.4=2.73
4.6+2.7=7.3
5.35+3.27=8.62
8.26-5.7+1.74=4.3
10.8-8.72=2.08
16.25-8.12=8.13
4.3+8.6-2.6=10.3
5.5-3.7=1.8
12.29-10.29=2
5.5-0.85+1.5=6.15
5.16+1.84=7
5.83+3.17=9
6.3-(4.2-3.7)=5.8
8+1.25=9.25
0.64+2.7+1.6=4.94
1.62+2.38=4
10-3.62=6.38
3.2+6.75+4.8=14.75
2.3-1.5=0.8
1.8+0.7=2.5
2.5-1.6+1.1=2
3.25+1.75=5
6.35+4.65=11
8.73-3.6-2.4=2.73
4.6+2.7=7.3
5.35+3.27=8.62
8.26-5.7+1.74=4.3
10.8-8.72=2.08
16.25-8.12=8.13
4.3+8.6-2.6=10.3
5.5-3.7=1.8
12.29-10.29=2
5.5-0.85+1.5=6.15
5.16+1.84=7
5.83+3.17=9
6.3-(4.2-3.7)=5.8
(二)列竖式计算(带*的要验算)。
38.59+6.88=
45.2-7.69=
27. -9.84=
38.59+6.88=
45.2-7.69=
27. -9.84=
答案
38.59+6.88=45.47
```
38.59
+ 6.88
--------
45.47
```
45.2-7.69=37.51
```
45.20
7.69
--------
37.51
```
*27-9.84=17.16
计算竖式:
```
27.00
9.84
--------
17.16
```
验算:
```
17.16
+ 9.84
--------
27.00
```
```
38.59
+ 6.88
--------
45.47
```
45.2-7.69=37.51
```
45.20
7.69
--------
37.51
```
*27-9.84=17.16
计算竖式:
```
27.00
9.84
--------
17.16
```
验算:
```
17.16
+ 9.84
--------
27.00
```
(三)解决问题。
运动会跳远比赛中,小明跳了2.08 m,小彬比小明少跳了0.13 m,比小海少跳了0.06 m。小海跳了多少米?
运动会跳远比赛中,小明跳了2.08 m,小彬比小明少跳了0.13 m,比小海少跳了0.06 m。小海跳了多少米?
答案
2.08 - 0.13 + 0.06
= 1.95 + 0.06
= 2.01(m)
答:小海跳了2.01米。
= 1.95 + 0.06
= 2.01(m)
答:小海跳了2.01米。
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