2025年通城学典计算能手五年级数学上册苏教版江苏专版第45页答案
一、口算。
$0.99 + 0.1 = $
1.09
$24.5 - 1.4 = $
23.1
$1.06 - 0.6 = $
0.46

$0.9 + 7.1 = $
8
$6.5 - 5.6 = $
0.9
$3.6 - 1.6 = $
2

$7.8 - 0.28 = $
7.52
$0.9 + 2.01 = $
2.91
$2.19 + 9.1 = $
11.29

$6.02 - 5.1 = $
0.92
$2.13 + 3.26 = $
5.39
$0.83 - 0.62 = $
0.21

$6 - 0.6 = $
5.4
$1.72 + 0.4 = $
2.12
$3.8 + 0.6 = $
4.4

$0.76 + 0.54 = $
1.3
$0.7 - 0.62 = $
0.08
$7 - 0.62 = $
6.38

$4.75 - 2.54 = $
2.21
$1.7 + 3 = $
4.7
$2.3 + 1.12 = $
3.42

$4.8 + 5.2 = $
10
$1.9 + 0.51 = $
2.41
$5.5 - 0.19 = $
5.31

答案

一、1.09 23.1 0.46 8 0.9 2 7.52 2.91 11.29 0.92 5.39 0.21 5.4 2.12 4.4 1.3 0.08 6.38 2.21 4.7 3.42 10 2.41 5.31
二、用竖式计算,带*的要验算。
$5.82 + 2.58$ $4.27 - 1.5$ *$4.57 + 23.9$ 
$74.62 + 36.8$ $17 - 8.99$ *$3.66 - 1.04$

答案


二、8.4 2.77 28.47 111.42 8.01 2.62



解析

```
5.82 + 2.58 = 8.4
5.82
+ 2.58
------
8.40
4.27 - 1.5 = 2.77
4.27
1.50
------
2.77
*4.57 + 23.9 = 28.47
4.57
+23.90
------
28.47
验算：
28.47
-23.90
------
4.57
74.62 + 36.8 = 111.42
74.62
+36.80
------
111.42
17 - 8.99 = 8.01
17.00
8.99
------
8.01
*3.66 - 1.04 = 2.62
3.66
-1.04
------
2.62
验算：
2.62
+1.04
------
3.66
```