450000=______万;4998000≈______万;19800000000=______亿;1458000000≈______亿.-数学

题目简介

450000=______万;4998000≈______万;19800000000=______亿;1458000000≈______亿.-数学

题目详情

450000=______万;4998000≈______万;19800000000=______亿;1458000000≈______亿.
题型:填空题难度:中档来源:不详

答案

(1)450000=45万;
(2)4998000≈500万;
(3)19800000000=198亿;
(4)1458000000≈15亿;
故答案为:45,500,198,15.

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