Question

简便计算3.6x3.42+0.36x65.8

Answer 1

3.6x3.42+0.36x65.8
=3.6x3.42+3.6x6.58

=3.6x（3.42+6.58）
=3.6x10
=36

Answer 2

3.6×3.42+0.36×65.8=3.6×3.42+0.36×10×6.58=3.6×3.42+3.6×6.58=3.6×（3.42+6.58）=3.6×10=36。