《2025年云南师大附小一线名师核心试卷五年级数学上册人教版》

二、判断。(对的打“√”,错的打“×”)(4分)
1. 一个数除以小数,商一定是小数。
(×)
2. $6.\dot{3}\dot{8} ＞ 6.\dot{3}8\dot{3}$
(√)
3. $16.97保留一位小数约是16.0$,也可以写成$16$。
(×)
4. 循环小数都是无限小数,所以无限小数也都是循环小数。
(×)

答案： 1.× 2.√ 3.× 4.×

三、填一填。(6分)

答案： 58.5 30

四、根据$23×15 = 345$,直接写出下面各题的得数。(4分)
$34.5÷23 = $1.5 $345÷2.3 = $150
$3.45÷0.15 = $23 $34.5÷0.15 = $230

答案： 1.5 150 23 230

1. 口算。(8分)
$2.8÷0.2 = $14 $0.48÷4 = $0.12 $6.3÷0.07 = $90 $80÷0.5 = $160
$1÷0.01 = $100 $0.36÷0.4 = $0.9 $0.6÷0.6 = $1 $0.39÷0.3 = $1.3
$2.4÷0.3 = $8 $15.5÷5 = $3.1 $12.8÷0.4 = $32 $4.8÷0.12 = $40
$63.3÷0.3 = $211 $3÷0.15 = $20 $0.72÷0.6 = $1.2 $0.31÷3.1 = $0.1

答案： 14 0.12 90 160 100 0.9 1 1.3 8 3.1 32 40 211 20 1.2 0.1

2. 竖式计算。(带 * 的要验算)(12分)
$30.45÷29$ $31.52÷0.8$ $1.308÷1.2$
* $7.05÷0.94$ $14÷0.56$

答案： 1.05 39.4 1.09 7.5 25