《2025年阳光同学计算小达人四年级数学下册人教版》

1. 填空。（建议2分钟完成）
$36\ dm = (\ \ \ \ )\ m$ $6\ g = (\ \ \ \ )\ kg$ $148\ m = (\ \ \ \ )\ km$
$9\ km\ 45\ m = (\ \ \ \ )\ km$ $7\ cm = (\ \ \ \ )\ m$ $300\ dm^{2} = (\ \ \ \ )\ m^{2}$
$400\ cm^{2} = (\ \ \ \ )\ dm^{2}$ $8034\ kg = (\ \ \ \ )\ t$ $6\ km\ 20\ m = (\ \ \ \ )\ km$

答案： 3.6@@0.006@@0.148@@9.045@@0.07@@3@@4@@8.034@@6.02

2. 口算。（建议2分钟完成）
$0.8\times10 =$ $42.5\div1000 =$ $0.46\times(\ \ \ \ ) = 460$
$1.3\div10 =$ $2.309\times100 =$ $(\ \ \ \ )\times100 = 280$
$4.5\times100 =$ $0.18\div100 =$ $(\ \ \ \ )\div10 = 96$
$9008\div1000 =$ $0.004\times1000 =$ $10.08\times(\ \ \ \ ) = 100.8$
$3.475\times100 =$ $5.68\times10 =$ $0.32\times(\ \ \ \ ) = 320$

答案： 8@@0.0425@@1000@@0.13@@230.9@@2.8@@450@@0.0018@@960@@9.008@@4@@10@@347.5@@56.8@@1000

3. 用简便方法计算。（建议4分钟完成）
$856 - 273 - 127 - 256$ $(20 + 4)\times25$ $98\times46$
$2700\div45\div2$ $40\times125$ $98\times37 + 74$

答案： 200@@600@@4508@@30@@5000@@3700

在括号里填上合适的单位。
$360(\ \ \ \ ) = 0.36(\ \ \ \ )$ $360(\ \ \ \ ) = 0.036(\ \ \ \ )$
$120(\ \ \ \ ) = 1.2(\ \ \ \ )$ $120(\ \ \ \ ) = 12(\ \ \ \ )$
$1(\ \ \ \ ) - 1(\ \ \ \ ) = 99(\ \ \ \ )$ $1(\ \ \ \ ) - 1(\ \ \ \ ) = 999(\ \ \ \ )$

答案： m@@km@@m²@@公顷@@cm²@@dm²@@mm@@cm@@m²@@dm²@@dm²@@t@@kg@@kg