2.5*4= 5.2*10= 0.005*100= 0.4*20= 100*0.78= 1.4*5=

4.8/0.8= 0.64/0.8= 10*0.45= 10-5.6= 3-1.5= 30*2.2=

0.39/3= 40*0.9= 80/100= 7.2/4= 6.6/0.6= 3.6*20=

69/100= 23/10= 15*60= 121/100= 0.125*100= 0.8*0.1=

4*2.2= 5.8-2.5= 200/5= 27.3/0.1= 20/100= 4.25*1.8=

1.25*0.37= 105/7.5= 10.92/4.2= 0.67*21= 30-15.75=

2.5*0.34 8.25/15 150*0.35 1.62*17 1.2*2.3=

0.33*9= 54.6/0.91 80/25= 1.96/1.4= 2.4*3.7=1.25*0.7=

21/0.75= 24/1.5= 3.8*3.6= 2.88/1.5=

这是52道题。