Question

简便运算：38.3*7.6+11*9.04+427*0.24

Answer 1

38.3*7.6+1.1*90.4+42.7*2.4

=38.3*7.6+1.1*90.4+38.3*2.4+4.4*2.4

=38.3*(7.6+2.4)+1.1*90.4+1.1*4*2.4

=38.3*10+1.1*(90.4+9.6)

=383+1100

=1483