4.50202…是___小數(shù),用簡便寫法記作___,保留整數(shù)約是___,保留兩位小數(shù)約是___.
4.50202…是___小數(shù),用簡便寫法記作___,保留整數(shù)約是___,保留兩位小數(shù)約是___.
循環(huán),4.5
,5,4.50.
解:(1)4.50202…是循環(huán)小數(shù);
(2)4.50202…記作:4.5
;
(3)4.5
≈5;
(4)4.5
≈4.50.
故答案為:循環(huán),4.5
,5,4.50.
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