问题
填空题
5.1×4.9=(______+______)(______-______)=______.
答案
5.1×4.9,
=(5+0.1)×(5-0.1),
=25-0.01,
=24.99.
故答案为:5;0.1;5;0.1;24.99.
5.1×4.9=(______+______)(______-______)=______.
5.1×4.9,
=(5+0.1)×(5-0.1),
=25-0.01,
=24.99.
故答案为:5;0.1;5;0.1;24.99.