Calculează : 297+ 53 = 900-781= 3×3×9+36:6 = 4×2×8-91:9 =

297+53=350
900-781=119
3×3×9+36:6=87
4×2×8-91:9=53,8888888889
297+53=350
900-781=29
3×3×9+36:6=9×9+6=81+6=87
4×2×8-91:9=8×8-10=64-10=54