下列数字修约到0.5单位正确的一组是( )。A:26.16→26.0 32.25

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问题 下列数字修约到0.5单位正确的一组是( )。A:26.16→26.0 32.25→32.5B:14.38→14.0 30.75→30.5C:26.16→26.5 32.45→32.0D:14.38→14.5 40.75→41.0

选项 A:26.16→26.0 32.25→32.5
B:14.38→14.0 30.75→30.5
C:26.16→26.5 32.45→32.0
D:14.38→14.5 40.75→41.0

答案 D

解析 0.5单位修约(半个单位修约)将修约数字乘以2,按指定修约间隔对2X依2的规定修约,所得数值(2X修约值)再除以2
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