Б) 45+24•5-(59-9)=115
г) 270:(303:3-11)+48=51
е) 48-(31-15)•2-2=14
з) 54:(13-10)•2+36=72
5.1*0.6=3.36 3.36+1.38=4.74 3.4*0.6=2.04 4.74-2.04=2.72
5.1*1.8=9.18 9.18+1.38=10.56 3.4*1.8=6.12 10.56-6.12=4.44
1 кг=1000 г
1 г= 1/1000 кг
480 г=480/1000 кг=48/100 кг=12/25 кг