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a fost răspuns

calculează,respectand ordinea efectuării operațiilor, a) 81:9+72:9, 7×6-4×9, 18+42:6, b) (92-38):6, 64:(4+4), 57-32:4, c) (32-24):4, 63:(3+6), 40-72:9, d) 100-9×8, 100:10×7, 90×100-127×3

Răspuns :

a) 9+8=17,42-36= 6,18+7=25.
b) 54:6=9,64:8=8,57-8=49
c)8:4=2,63:9=7,40-8-32
d)100-72=28,10x7=70,900-381=519