Question

零点二加五分之一乘以三点七加十分之53乘以百分之二十简算

Answer 1

=0.2+1/5*3.7+53/10*20%

=0.2+0.2*3.7+5.3*0.2

=0.2*(1+3.7+5.3)

=0.2*10

=2