40:8+2×100=5+200=205
40:(8+2)×100=40:10×100=4×100=400
(40÷8+2)×100=(5+2)×100=7×100=700
100-(40+36):4=100-76:4=100-19=81
(100-40+36)÷4=(60+36):4=96:4=24
100-(40+36:4)=100-(40+9)=100-49=51
900:9-6×10=100-60=40
600÷100+50×10=6+500=506
70×5+3×100=350+300=650