95-450:90×2 = 95-5×2 = 95-10 = 85.
8×15-640:20+12 = 120-32+12 = 88+12 = 100.
230:10×2+675:15-45:9 = 23×2+45-5 = 46+40 = 86.
362-255×4:6×1+92:4 = 362-1020:6+23 = 362-170+23 = 192+23 = 215.
700:100×36-23×21:7-170 = 7×36-23×3-170 = 252-69-170 = 183-170 = 13.
J'espère aidé :)