Question

5.6乘69.32加138.64乘0.05加693.2乘0.43怎么减算

Answer 1

5.6*69.32+138.64*0.05+693.2*0.43

=5.6*69.32+69.32*0.1+69.32*4.3

=69.32*(5.6+0.1+4.3)

=69.32*10

=693.2