Question

15.2-6.8-1.02简便还有0.27+0.27*0.37+0.37*0.63 12.5*4*2.5*12 9.6/

Answer 1

15.2-6.8-1.02=15.2-1.02-6.8=14-6.8=7.2

0.27+0.27*0.37+0.37*0.63 =0.27+0.37*(0.27+0.63)=0.27+0.37*0.9=0.27+0.333=0.603 12.5*4*2.5*12 =50*30=1500

9.6/（9.6*4）=1/4=0.25

3.72*3.5+6.28*3.5=3.5*(3.72+6.28)=3.5*10=35

9.9*8.6+0.86 =99*0.86+0.86=0.86*(99+1)=86