900-2х50+140=
600+90:3-200=
700-25х2+100=
120-75:3х4+65=
200-80:4х5-35=
108-54:9х6+58=
342:3=
564:2=
721:7=

600+90:3-200=430700-25х2+100=750120-75:3х4+65=85200-80:4х5-35=65108-54:9х6+58=130342/3= 114564/2= 282721/7= 103

900-2×5+140=45040600+90:3-200=30700-25×2+100=1450120-75:3×4+65=125200-80:4×5-35=115108-54:9×6+58=94342:3=114 564:2=282721:7=103