Question

用简便方法计算，0.125x64，0.68x101，0.025x48。

Answer 1

0.125×8×8＝1×8＝8

0.68×（100+1）＝0.68×100+0.68×1＝68.68

0.025×40×1.2＝1.2

Answer 2

 

Answer 3

0.125×64
=0.125×8×8
=1×8
=8

追答

0.68×101
=0.68×〔100+1〕

打字略慢

=68+0.68
=68.68

0.025×48
=0.025×4×12
=0.1×12
=1.2