Răspuns:
4.125=4125 supra 1000=tăiem 4125 si 1000=33 supra 8
13,81,2=13812×10la puterea4
13,8.100=1381 supra 100
15,6.10=156×10=1.560
213,8:100=2,138=1069 supra500,2pe69 supra 500
156:0,315,6:32=156:789 supra2500×1supra32=156×2500supra789×1supra32=51×625supra236×1supra8=13×625supra263×1supra2=8125supra526
sper k am fost de ajutor
