2025年通城学典计算能手五年级数学上册苏教版第84页答案
一、口算。
$6.03÷0.9=$
6.7
$39.2÷0.8=$
49
$0.5+0.5×0.6=$
0.8

$1.2×0.8=$
0.96
$1.76×0.5=$
0.88
$0.9×7+10.7=$
17

$1.5÷0.03=$
50
$2.7×60=$
162
$6.8-2.4÷3=$
6

$3.2×50=$
160
$4.06×0.5=$
2.03
$4.8÷0.2×0.5=$
12

$0.12÷0.3=$
0.4
$0.52+0.48=$
1
$1.5×0.2÷0.3=$
1

$3.6÷0.18=$
20
$3.9+2.91=$
6.81
$4.5×4×0.2=$
3.6

$2.4×0.3=$
0.72
$4.8÷48=$
0.1
$7.2-1.2+6.7=$
12.7

$2.5-0.05=$
2.45
$2.19+9.1=$
11.29
$8.5-0.24-1.76=$
6.5

答案

6.7 49 0.8 0.96 0.88 17 50 162 6 160 2.03 12 0.4 1 1 20 6.81 3.6 0.72 0.1 12.7 2.45 11.29 6.5
二、计算下面各题,怎样简便就怎样计算。
$0.25×32×1.25$ $17.82+[0.75×(4.5+3.55)]$
$17.3×99+0.173×100$ $39.1÷[0.3÷(11.4+3.6)]$

答案

10 23.8575 1730 1955

解析

$0.25×32×1.25$
$=0.25×4×8×1.25$
$=(0.25×4)×(8×1.25)$
$=1×10$
$=10$
$17.82+[0.75×(4.5+3.55)]$
$=17.82+[0.75×8.05]$
$=17.82+6.0375$
$=23.8575$
$17.3×99+0.173×100$
$=17.3×99+17.3×1$
$=17.3×(99+1)$
$=17.3×100$
$=1730$
$39.1÷[0.3÷(11.4+3.6)]$
$=39.1÷[0.3÷15]$
$=39.1÷0.02$
$=1955$