问题
填空题
直接写计算结果:(1)202×198=______;(2)0.125100×8100=______.
答案
(1)202×198
=(200+2)(200-2)
=2002-22
=40000-4
=39996;
(2)0.125100×8100
=(0.125×8)100
=1.
故答案为:39996;1.
直接写计算结果:(1)202×198=______;(2)0.125100×8100=______.
(1)202×198
=(200+2)(200-2)
=2002-22
=40000-4
=39996;
(2)0.125100×8100
=(0.125×8)100
=1.
故答案为:39996;1.