200/2*(540+ 460)/10= 200/2*540+460/10= 200/2*(540+460/10)=
540 + 460 = 1000 200 : 2 = 100 100 * 1000 = 100 000 100 000 : 10 = 10 000
200: 2 =100
460 : 10 = 46
540 +100 = 640
640 + 46 = 686
3) 540 + 460 = 1000
1000 : 10 =100
200 :20 =100
100 : 100 = 1
1) 200\2=100 (540+460)\10=1000\10=100 100*100=10000 2)100*540=54000 460\10=46 54000+46=54046 3)=1)