2025年通城学典计算能手五年级数学上册苏教版第45页答案
一、口算。
$7.93 - 0.3 = $
7.63
$7.5 - 5.7 = $
1.8
$0.9 - 0.09 = $
0.81

$1.3 + 0.03 = $
1.33
$0.37 + 0.73 = $
1.1
$4.8 + 2.02 = $
6.82

$2.68 - 0.37 = $
2.31
$0.49 + 0.55 = $
1.04
$2.8 - 0.28 = $
2.52

$6.3 - 0.7 = $
5.6
$22.5 + 9.4 = $
31.9
$0.19 + 5.1 = $
5.29

$12.6 - 2.5 = $
10.1
$20 - 6.9 = $
13.1
$5.4 + 2.34 = $
7.74

$6.3 + 3.7 = $
10
$3.86 + 7.23 = $
11.09
$0.99 + 1.8 = $
2.79

$1.04 - 0.4 = $
0.64
$7.3 + 2.1 = $
9.4
$0.49 + 0.51 = $
1

$6 - 2.35 = $
3.65
$2.74 - 0.68 = $
2.06
$21.5 + 9.5 = $
31

答案

7.63 1.8 0.81 1.33 1.1 6.82 2.31 1.04 2.52 5.6 31.9 5.29 10.1 13.1 7.74 10 11.09 2.79 0.64 9.4 1 3.65 2.06 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

8.4 2.77 28.47 111.42 8.01 2.62