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