用竖式计算。
23.9 - 0.95 0.45 + 13.6 15.3 - 5.78
8.69 + 37.8 63.9 - 4.85 37.5 + 19.85
40 - 7.35 6.59 + 5.27 13.46 - 4.5
1.89 + 0.31 31.6 - 25.8 34.8 + 4.56
3.89 + 20.8 70 - 26.75 8.6 + 0.75
5.26 - 0.19 7.65 + 3.18 3.6 - 0.18
24.53 + 6.47 68.1 - 25.09 4.4 + 0.99
50.2 - 2.77 13.64 + 31.9 0.57 - 0.032
8.67 + 26.6 1.87 - 0.012 18.7 + 3.84
47.66 - 17.8 1.57 + 28.6 27.164 - 19.6
23.9 - 0.95 0.45 + 13.6 15.3 - 5.78
8.69 + 37.8 63.9 - 4.85 37.5 + 19.85
40 - 7.35 6.59 + 5.27 13.46 - 4.5
1.89 + 0.31 31.6 - 25.8 34.8 + 4.56
3.89 + 20.8 70 - 26.75 8.6 + 0.75
5.26 - 0.19 7.65 + 3.18 3.6 - 0.18
24.53 + 6.47 68.1 - 25.09 4.4 + 0.99
50.2 - 2.77 13.64 + 31.9 0.57 - 0.032
8.67 + 26.6 1.87 - 0.012 18.7 + 3.84
47.66 - 17.8 1.57 + 28.6 27.164 - 19.6
答案
1. 计算$23.9 - 0.95$:
解:
$\begin{aligned}&\quad23.90\\&-\quad0.95\\&\quad22.95\end{aligned}$
2. 计算$0.45 + 13.6$:
解:
$\begin{aligned}&\quad0.45\\&+\quad13.60\\&\quad14.05\end{aligned}$
3. 计算$15.3 - 5.78$:
解:
$\begin{aligned}&\quad15.30\\&-\quad5.78\\&\quad9.52\end{aligned}$
4. 计算$8.69 + 37.8$:
解:
$\begin{aligned}&\quad8.69\\&+\quad37.80\\&\quad46.49\end{aligned}$
5. 计算$63.9 - 4.85$:
解:
$\begin{aligned}&\quad63.90\\&-\quad4.85\\&\quad59.05\end{aligned}$
6. 计算$37.5 + 19.85$:
解:
$\begin{aligned}&\quad37.50\\&+\quad19.85\\&\quad57.35\end{aligned}$
7. 计算$40 - 7.35$:
解:
$\begin{aligned}&\quad40.00\\&-\quad7.35\\&\quad32.65\end{aligned}$
8. 计算$6.59 + 5.27$:
解:
$\begin{aligned}&\quad6.59\\&+\quad5.27\\&\quad11.86\end{aligned}$
9. 计算$13.46 - 4.5$:
解:
$\begin{aligned}&\quad13.46\\&-\quad4.50\\&\quad8.96\end{aligned}$
10. 计算$1.89 + 0.31$:
解:
$\begin{aligned}&\quad1.89\\&+\quad0.31\\&\quad2.20\end{aligned}$
11. 计算$31.6 - 25.8$:
解:
$\begin{aligned}&\quad31.6\\&-\quad25.8\\&\quad5.8\end{aligned}$
12. 计算$34.8 + 4.56$:
解:
$\begin{aligned}&\quad34.80\\&+\quad4.56\\&\quad39.36\end{aligned}$
13. 计算$3.89 + 20.8$:
解:
$\begin{aligned}&\quad3.89\\&+\quad20.80\\&\quad24.69\end{aligned}$
14. 计算$70 - 26.75$:
解:
$\begin{aligned}&\quad70.00\\&-\quad26.75\\&\quad43.25\end{aligned}$
15. 计算$8.6 + 0.75$:
解:
$\begin{aligned}&\quad8.60\\&+\quad0.75\\&\quad9.35\end{aligned}$
16. 计算$5.26 - 0.19$:
解:
$\begin{aligned}&\quad5.26\\&-\quad0.19\\&\quad5.07\end{aligned}$
17. 计算$7.65 + 3.18$:
解:
$\begin{aligned}&\quad7.65\\&+\quad3.18\\&\quad10.83\end{aligned}$
18. 计算$3.6 - 0.18$:
解:
$\begin{aligned}&\quad3.60\\&-\quad0.18\\&\quad3.42\end{aligned}$
19. 计算$24.53 + 6.47$:
解:
$\begin{aligned}&\quad24.53\\&+\quad6.47\\&\quad31.00\end{aligned}$
20. 计算$68.1 - 25.09$:
解:
$\begin{aligned}&\quad68.10\\&-\quad25.09\\&\quad43.01\end{aligned}$
21. 计算$4.4 + 0.99$:
解:
$\begin{aligned}&\quad4.40\\&+\quad0.99\\&\quad5.39\end{aligned}$
22. 计算$50.2 - 2.77$:
解:
$\begin{aligned}&\quad50.20\\&-\quad2.77\\&\quad47.43\end{aligned}$
23. 计算$13.64 + 31.9$:
解:
$\begin{aligned}&\quad13.64\\&+\quad31.90\\&\quad45.54\end{aligned}$
24. 计算$0.57 - 0.032$:
解:
$\begin{aligned}&\quad0.570\\&-\quad0.032\\&\quad0.538\end{aligned}$
25. 计算$8.67 + 26.6$:
解:
$\begin{aligned}&\quad8.67\\&+\quad26.60\\&\quad35.27\end{aligned}$
26. 计算$1.87 - 0.012$:
解:
$\begin{aligned}&\quad1.870\\&-\quad0.012\\&\quad1.858\end{aligned}$
27. 计算$18.7 + 3.84$:
解:
$\begin{aligned}&\quad18.70\\&+\quad3.84\\&\quad22.54\end{aligned}$
28. 计算$47.66 - 17.8$:
解:
$\begin{aligned}&\quad47.66\\&-\quad17.80\\&\quad29.86\end{aligned}$
29. 计算$1.57 + 28.6$:
解:
$\begin{aligned}&\quad1.57\\&+\quad28.60\\&\quad30.17\end{aligned}$
30. 计算$27.164 - 19.6$:
解:
$\begin{aligned}&\quad27.164\\&-\quad19.600\\&\quad7.564\end{aligned}$
解:
$\begin{aligned}&\quad23.90\\&-\quad0.95\\&\quad22.95\end{aligned}$
2. 计算$0.45 + 13.6$:
解:
$\begin{aligned}&\quad0.45\\&+\quad13.60\\&\quad14.05\end{aligned}$
3. 计算$15.3 - 5.78$:
解:
$\begin{aligned}&\quad15.30\\&-\quad5.78\\&\quad9.52\end{aligned}$
4. 计算$8.69 + 37.8$:
解:
$\begin{aligned}&\quad8.69\\&+\quad37.80\\&\quad46.49\end{aligned}$
5. 计算$63.9 - 4.85$:
解:
$\begin{aligned}&\quad63.90\\&-\quad4.85\\&\quad59.05\end{aligned}$
6. 计算$37.5 + 19.85$:
解:
$\begin{aligned}&\quad37.50\\&+\quad19.85\\&\quad57.35\end{aligned}$
7. 计算$40 - 7.35$:
解:
$\begin{aligned}&\quad40.00\\&-\quad7.35\\&\quad32.65\end{aligned}$
8. 计算$6.59 + 5.27$:
解:
$\begin{aligned}&\quad6.59\\&+\quad5.27\\&\quad11.86\end{aligned}$
9. 计算$13.46 - 4.5$:
解:
$\begin{aligned}&\quad13.46\\&-\quad4.50\\&\quad8.96\end{aligned}$
10. 计算$1.89 + 0.31$:
解:
$\begin{aligned}&\quad1.89\\&+\quad0.31\\&\quad2.20\end{aligned}$
11. 计算$31.6 - 25.8$:
解:
$\begin{aligned}&\quad31.6\\&-\quad25.8\\&\quad5.8\end{aligned}$
12. 计算$34.8 + 4.56$:
解:
$\begin{aligned}&\quad34.80\\&+\quad4.56\\&\quad39.36\end{aligned}$
13. 计算$3.89 + 20.8$:
解:
$\begin{aligned}&\quad3.89\\&+\quad20.80\\&\quad24.69\end{aligned}$
14. 计算$70 - 26.75$:
解:
$\begin{aligned}&\quad70.00\\&-\quad26.75\\&\quad43.25\end{aligned}$
15. 计算$8.6 + 0.75$:
解:
$\begin{aligned}&\quad8.60\\&+\quad0.75\\&\quad9.35\end{aligned}$
16. 计算$5.26 - 0.19$:
解:
$\begin{aligned}&\quad5.26\\&-\quad0.19\\&\quad5.07\end{aligned}$
17. 计算$7.65 + 3.18$:
解:
$\begin{aligned}&\quad7.65\\&+\quad3.18\\&\quad10.83\end{aligned}$
18. 计算$3.6 - 0.18$:
解:
$\begin{aligned}&\quad3.60\\&-\quad0.18\\&\quad3.42\end{aligned}$
19. 计算$24.53 + 6.47$:
解:
$\begin{aligned}&\quad24.53\\&+\quad6.47\\&\quad31.00\end{aligned}$
20. 计算$68.1 - 25.09$:
解:
$\begin{aligned}&\quad68.10\\&-\quad25.09\\&\quad43.01\end{aligned}$
21. 计算$4.4 + 0.99$:
解:
$\begin{aligned}&\quad4.40\\&+\quad0.99\\&\quad5.39\end{aligned}$
22. 计算$50.2 - 2.77$:
解:
$\begin{aligned}&\quad50.20\\&-\quad2.77\\&\quad47.43\end{aligned}$
23. 计算$13.64 + 31.9$:
解:
$\begin{aligned}&\quad13.64\\&+\quad31.90\\&\quad45.54\end{aligned}$
24. 计算$0.57 - 0.032$:
解:
$\begin{aligned}&\quad0.570\\&-\quad0.032\\&\quad0.538\end{aligned}$
25. 计算$8.67 + 26.6$:
解:
$\begin{aligned}&\quad8.67\\&+\quad26.60\\&\quad35.27\end{aligned}$
26. 计算$1.87 - 0.012$:
解:
$\begin{aligned}&\quad1.870\\&-\quad0.012\\&\quad1.858\end{aligned}$
27. 计算$18.7 + 3.84$:
解:
$\begin{aligned}&\quad18.70\\&+\quad3.84\\&\quad22.54\end{aligned}$
28. 计算$47.66 - 17.8$:
解:
$\begin{aligned}&\quad47.66\\&-\quad17.80\\&\quad29.86\end{aligned}$
29. 计算$1.57 + 28.6$:
解:
$\begin{aligned}&\quad1.57\\&+\quad28.60\\&\quad30.17\end{aligned}$
30. 计算$27.164 - 19.6$:
解:
$\begin{aligned}&\quad27.164\\&-\quad19.600\\&\quad7.564\end{aligned}$
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