问题
解答题
估算了(写出估算过程)
49×304824×39 81×298106×41.
答案
(1)49×304,
≈50×300,
=15000;
(2)824×39,
≈800×40,
=32000;
(3)81×298,
≈80×300,
=24000;
(4)106×41,
=100×40,
=4000.
估算了(写出估算过程)
49×304824×39 81×298106×41.
(1)49×304,
≈50×300,
=15000;
(2)824×39,
≈800×40,
=32000;
(3)81×298,
≈80×300,
=24000;
(4)106×41,
=100×40,
=4000.