Np. 2/3 to ⅔. Będzie to tu potrzebne !
Zadanie 1
3 1/5
5/6
1
5/9
Zadanie 2
5/7
1/4
5/16
Zadanie 3
(skracy ułamki, tak się to chyba nazywa, czyli 1/2 = 2/1 = 1/1 = 1)
a) 2 5/3 + 1 1/9 = 11/3 + 1/9 = 33/9 + 1/9 = 34/9
b) 6 5/7 - 4 1/2 = 42/7 - 9/2 =
42/7 = (42*2)/(7*2) = 84/14
9/2 = (9*7)/(2*7) = 63/14
42/7 - 9/2 = 84/14 - 63/14
84/14 - 63/14 = (84-63)/14
(84-63)/14 = 21/14
21/14 = 3/2
3/2 = 1 1/2
c) 2 2/5 - 3 1/3 = ?
2 2/5 = (2*5+2)/5 = 12/5
3 1/3 = (3*3+1)/3 = 10/3
2 2/5 = (12*3)/(5*3) = 36/15
3 1/3 = (10*5)/(3*5) = 50/15
2 2/5 - 3 1/3 = 36/15 - 50/15
36/15 - 50/15 = (36-50)/15
(36-50)/15 = -14/15
d)2 3/4 - 1 2/9 = ?
2 3/4 = (2*4+3)/4 = 11/4
1 2/9 = (1*9+2)/9 = 11/9
2 3/4 = (11*9)/(4*9) = 99/36
1 2/9 = (11*4)/(9*4) = 44/36
2 3/4 - 1 2/9 = 99/36 - 44/36
99/36 - 44/36 = (99-44)/36
(99-44)/36 = 55/36
55/36 = 1 19/36
Zadanie 5
800 : 16 = 50
7* 50 = 350
Liczę na naj i mam nadzieję, że pomogłem (zależy mi na naj) raczej dobrze
