Question

奥数题：1.37*41.5+13.7*5.149+1.37*1.7=?

Answer 1

1.37*41.5+13.7*5.149+1.37*1.7

=1.37*41.5+1.37*51.49+1.37*1.7

=1.37*(41.5+51.49+1.7)=1.37*94.69