ordinea efectuării operațiilor . 1. Calculează 81- 37+19-8+42 = 2×3×4×0= 81: 9:3:1 = 24:4×5:6×8= 2 Efectuează : 237-42:7-9×6+8×0:5-56:7×8=™ 3 ) Verifică egalitatea 9×8+42:7-32:8=19+81:9-2×9+40:5

1.
81- 37+19-8+42=97
2x3x4x0=0
81:9:3:1=9:3:1=3
24:4x5:6x8=6x5:6X8=30:5x8=6x8=48
2.
237-42:7-9x6+8x0:5-56:7x8=
=237-6-54+0-64=
=237-124=
=113
3.
9x8+42:7-32:8=19+81:9-2x9+40:5
72+6-4=19+9-18+8
74=18
fals, 74 diferit de 18