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10 questions
509的十位近似值
500
510
970的百位近似值
900
1000
457的十位近似值
460
733的百位近似值
800
700
235的百位近似值
200
300
399的十位近似值
390
400
824的十位近似值
820
810
609的十位近似值
600
610
134的百位近似值是
100
130
457的百位近似值
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