问题
解答题
|
答案
(1)603×39,
≈600×40,
=24000;
(2)390÷21,
≈400÷20,
=20;
(3)396×41,
≈400×40,
=16000;
(4)478÷81,
≈480÷80,
=6;
故答案为:24000,20,16000,6.
|
(1)603×39,
≈600×40,
=24000;
(2)390÷21,
≈400÷20,
=20;
(3)396×41,
≈400×40,
=16000;
(4)478÷81,
≈480÷80,
=6;
故答案为:24000,20,16000,6.