Znajdz NWW i NWD liczby: a)300 i 990 b)12,18 i 96 zad.2 -Wyznacz liczbę,której12%stanowi 57 -Oblicz15%liczby 300

zad.1 a) nww = 9900 (300*33=9900, 990*10=9900) nwd = 30 b) nww = 576 (96*6=576, 18*32=576, 12*38=576) nwd = 6 zad.2 a) 12% - 57 100% - x x*12=57*100 12x=5700 x=475 b) 100% - 300 15% - x x*100=15*300 100x=4500 x= 45

a) 300 i 990 300 | 2 150 | 2 75 | 3 25 |5 5 | 5 1 300 = 2×2×3×5×5 990 | 2 495 | 3 165 | 3 55 | 5 11 | 11 1 990 = 2×3×3×5×11 NWD (300, 990) = 2×3×5 = 30 NWW (300, 990) = (2×2×3×5×5)×3×11 = 300×33 = 9900 b) 12,18 i 96 12 | 2 6 | 2 3|3 1 12 = 2×2×3 18 | 2 9 | 3 3 | 3 1 18 = 2×3×3 96 | 2 48| 2 24 | 2 12 | 2 6 | 2 3 | 3 1 96 = 2×2×2×2×2×3 NWD (12,18, 96) = 2 × 3 = 6 NWW (12,18, 96) = (2×2×3)×3×2×2×2 = 288 zad.2 -Wyznacz liczbę, której12% stanowi 57 12% * x = 57 0,12 * x = 57 /: 0,12 x = 475 -Oblicz15% liczby 300 x = 15% * 300 = 0,15 * 300 = 45