Question

Oblicz w pamięci :

1/3 + 3/4 =
3/5 - 1/2 =
1 1/2 - 1/3 =
1 1/2 + 3/8 =
1 1/3 - 2/9 =
2 3/5 - 7/10 =
5/6 - 1/4 =
1 1/6 - 7/9 =
2 3/8 - 1 5/6 =

Sorki że tak dużo ale Punktów też sporo. Liczę na szybkie odpowiedzi .Jest to podręcznik matematyka z plusem dla klasy 1 Gimnazjum

Answer 1

A) 1/3 + 3/4 = 4/12 + 9/12 = 13/12 = 1 1/12
b) 3/5 - 1/2 = 6/10 - 5/10 = 1/10
c) 1 1/2 - 1/3 = 1 3/6 - 2/6 = 1 1/6
d) 1 1/2 + 3/8 = 1 4/8 + 3/8 = 1 7/8
e) 1 1/3 - 2/9 = 1 3/9 - 2/9 = 1 1/9
f) 2 3/5 - 7/10 = 2 6/10 - 7/10 = 1 16/10 - 7/10 = 1 9/10
g) 5/6 - 1/4 = 20/24 - 6/24 = 14/24 = 7/12
h) 1 1/6 - 7/9 = 1 9/54 - 42/54 = 63/54 - 42/54 = 21/54 = 7/18
i) 2 3/8 - 1 5/6 = 2 18/48 - 1 40/48 = 1 66/48 - 1 40/48 = 26/48 = 13/24

Answer 2

1/3+3/4= 4/12+9/12= 13/12=1 1/12
3/5-1/2= 6/10 -5/10 =1/10
1 1/2 - 1/3= 1 3/6 -2/6= 1 1/6
1 1/3 -2/9= 1 3/9 -2/9=1 1/9
2 3/5 -7/10= 2 6/10 =7/10= 1 9/10
5/6 -1/4= 10/12 -3/12=7/12
1 1/6 -7/9= 1 3/18 -14/18= 7/18
2 3/8 - 1 5/6= 2 9/24-1 20/24=13/24