0.248锧2.48ᘧ࿾99.9简便方法?

2025-01-19 07:06:42
推荐回答(2个)
回答1:

0.248+2.48×99.9
=2.48×(0.1+99.9)
=2.48×100
=248

回答2:

=2.48*0.1+2.48*99.9
=2.48*(0.1+99.9)
=2.48*100
=248