85×9 = 9×(80+5)
= 9×80 + 9×5
= 720 + 45
= 765
5×74 = 5×(70+4)
= 5×70 + 5×4
= 350+20
= 370
8×49 = 8×(40+9)
= 8×40+8×9
= 320+72
= 392
75×6 = 6×(70+5)
= 6×70+6×5
= 420+30
= 450
38×6 = 6×(30+8)
= 6×30+6×8
= 180+48
= 228
9×96 = 9×(90+6)
= 9×90+9×6
= 810+54
= 864
6×79 = 6×(70+9)
= 6×70+6×9
= 420×54
= 574
7×54 = 7×(50+4)
= 7×50+7×4
= 350+28
= 378
48×8 = 8×(40+8)
= 8×40+8×8
= 320+64
= 384
Sper ca te am ajutat =))
