《2025年同步指导素养评价与归类复习测试卷五年级数学上册人教版》

5. 下面的算式中,商最大的是(A)。
A.$30÷0.75$
B.$30÷7.5$
C.$15÷75$
D.$15÷7.5$

答案： A

1. 直接写出得数。(每题0.5分,共8分)
$3.6÷9 = $0.4 $0.88÷0.8 = $1.1
$5.2÷2.6 = $2 $12.3×3 = $36.9
$4.9÷0.7 = $7 $4÷0.8 = $5
$0.21×5 = $1.05 $4.5÷0.9 = $5
$7.6÷0.76 = $10 $0.9×0.8 = $0.72
$6.92÷0.1 = $69.2 $9.7÷10 = $0.97
$4.5÷0.5 = $9 $24.6÷0.3 = $82
$0.5×0.7 = $0.35 $8.91÷0.01 = $891

答案： 0.4；1.1；2；36.9；7；5；1.05；5；10；0.72；69.2；0.97；9；82；0.35；891

2. 列竖式计算,带“*”的题要验算。(计算2分,验算1分,共14分)
$59.5÷3.5 = $17 *$4.5÷0.18 = $25
$38.72÷0.88 = $44 *$41.31÷5.1 = $8.1
$73.9÷4.6\approx$16.1(得数保留一位小数) $1.19÷2.4\approx$0.50(得数精确到百分位)

答案： 答题卡：
2.
$59.5 ÷ 3.5 = 17$
$\begin{array}{r r r r r r r r r }&&&&1&7 \\ \hline &3&5&)&5&9&.5 \\ &&&3&5 \\ \hline &&&2&4&5 \\ &&&2&4&5 \\ \hline &&&&0\end{array}$
* $4.5 ÷ 0.18 = 25$
$\begin{array}{r r r r r r r r r }&&&&2&5 \\ \hline &0&1&8&)&4&5&0 \\ &&&&3&6 \\ \hline &&&&&9&0 \\ &&&&&9&0 \\ \hline &&&&&0\end{array}$
验算：$25×0.18=4.5$
$38.72 ÷ 0.88 = 44$
$\begin{array}{r r r r r r r r r }&&&&4&4 \\ \hline &0&8&8&)&3&8&.7&2 \\ &&&3&5&2 \\ \hline &&&&3&5&2 \\ &&&&3&5&2 \\ \hline &&&&&0\end{array}$
* $41.31 ÷ 5.1 = 8.1$
$\begin{array}{r r r r r r r r r }&&&&8&.1 \\ \hline &5&1&)&4&1&3&.1 \\ &&&4&0&8 \\ \hline &&&&&5&1 \\ &&&&&5&1 \\ \hline &&&&&0\end{array}$
验算：$8.1×5.1=41.31$
$73.9 ÷ 4.6 \approx 16.1$（得数保留一位小数）
$\begin{array}{r r r r r r r r r }&&&1&6&.0&6&5 \\ \hline &4&6&)&7&3&.9 \\ &&&4&6 \\ \hline &&&2&7&9 \\ &&&2&7&6 \\ \hline &&&&&3&0&0 \\ &&&&&2&7&6 \\ \hline &&&&&&2&4\end{array}$
四舍五入保留一位小数：$16.1$
$1.19 ÷ 2.4 \approx 0.50$（得数精确到百分位）
$\begin{array}{r r r r r r r r r }&&&&0&.4&9&5&8 \\ \hline &2&4&)&1&1&.9 \\ &&&&9&6 \\ \hline &&&&2&3&0 \\ &&&&2&1&6 \\ \hline &&&&&1&4&0 \\ &&&&&&9&6 \\ \hline &&&&&&4&4\end{array}$
四舍五入精确到百分位：$0.50$