zad. 4
a)
4×⅔= 4/1 × ⅔ = 8/3 = 2⅔
5×1/15= 5/1 × 1/15 = 5/15 = 3
2×¾ = 2/1 × ¾ = 6/4 = 1 i 2/4
b)
5×3/10 = 5/1 × 3/10 = 15/10 = 1 i 5/10
3×1/9 = 3/1 × 1×9 = 3/9 = 3
2×⅚= 2/1 × ⅚ *skracamy 2 z 6 zostaje nam 1 i 3* = 1/1 × 5/3 = 5/3 = 1⅔
c)
2×2/7 = 2/1 × 2/7 = 4/7
4×¾ = 4/1 × ¾ *skracamy 4 z 4 zostaje nam 1 i 1* = 1/1 × 3/1 = 3/1 = 3
5×⅗= 5/1 × ⅗ *skracamy 5 z 5 zostaje nam 1 i 1* = 1/1 × 3/1 = 3/1 = 3
zad. 5
a)
3×1 i 1/3 = 3 × ¾ = 3/1 × ¾ = 9/4 = 2 i 1/4
3×5 i 1/3 = 3 × 16/3 = 3/1 × 16/3 = 48/3 = 16
5×4 i 1/5 = 5 × 21/5 = 5/1 × 21/5 = 105/5 = 21
b)
2×1 i 2/3 = 2 × 5/3 = 2/1 × 5/3 = 10/3 = 3 i 1/3
2×1 i 2/6 = 2 × 8/6 = 2/1 × 8/6 = 16/6 = 3 i 4/6
2×2 i ¾ = 2 × 11/4 = 2/1 × 11/4 = 22/4 = 5 i 2/4
c)
3×1 i 1/3 = 3 × 4/3 = 3/1 × 4/3 = 12/3 = 4
3×2 i ⅔ = 3 × 8/3 = 3/1 × 8/3 = 24/3 = 8
3×2 i 1/6 = 3 × 13/6 = 3/1 × 13/6 = 39/6 = 6 i 3/6
d)
4× 2 i 1/4 = 4 × 9/4 = 4/1 × 9/4 = 36/4 = 9
4× 2 i ¾ = 4 × 11/4 = 4/1 × 11/4 = 44/4 = 11
4× 1 i 1/7 = 4 × 8/7 = 4/1 × 8/7 = 32/7 = 4 i 4/7
mam nadzieję, że pomogłam ;)
liczę na naj (za moje wypociny) :D
