Question

Klasa 6 zbiór zadań. Zad 49. Str 14
Oblicz:

a) 3/4 + 1/4 x 5= ....
b
Klasa 6 zbiór zadań. Zad 49. Str 14
Oblicz:

a) 3/4 + 1/4 x 5= ....
b) 1 5/6 - 1/6 x 1 1/2= ....
c)(1 3/8 + 2 5/6) x 12= ....
d) 1 1/3 x (3 + 2 x 3/4)= ....
e) 6 1/6 : 1/6 - 2 1/4 : 2= ....
f) (4 1/6 - 3 5/7) : 19= ....
g) 1 7/9 : 2 2/3 - 2/5 : 1 3/5= ....
h) 2 1/2 x (4/5 - (1/2 do potęgi 3) x 8/9=....

Proszę aby to zadanie było rozpisane, a nie tylko wynik!
Z góry wielkie dzięki! :)

Answer 1

a) 3/4 + 1/4 x 5= 4/4 * 5 = 1 * 5 = 5
b) 1 5/6 - 1/6 x 1 1/2= 11/6 - 1/6 * 3/2 = 11/6 - 1/4 = 22/12 - 3/12 = 19/12 = 1 7/12
c)(1 3/8 + 2 5/6) x 12= (11/8 + 17/6) * 12 = (33/24 + 68/24) * 12 = 101/24 *12 =
   1212/24 = 303
d) 1 1/3 x (3 + 2 x 3/4)= 4/3 * (3 + 6/4) = 4/3 * (12/4 + 6/4) = 4/3 * 18/4 = 6/1 = 6
e) 6 1/6 : 1/6 - 2 1/4 : 2= 37/6 : 1/6 - 9/4 * 1/2 = 37/6 * 6/1 - 9/8 = 37/1 - 9/8 = 37 - 9/8 = 35 16/8 - 9/8 = 35 7/8
f) (4 1/6 - 3 5/7) : 19= (25/6 - 26/7) : 19 = (175/42 - 156/42) : 19 = 19/42 * 1/19 = 1/42
g) 1 7/9 : 2 2/3 - 2/5 : 1 3/5= 16/9 : 8/3 - 2/5 : 8/5 = 16/9 * 3/8 - 2/5 * 5/8 = 2/3 - 1/4 =
   8/12 - 3/12 = 5/12
h) 2 1/2 x (4/5 - (1/2 do potęgi 3) x 8/9= 5/2 * (4/5 - 1/8) * 8/9 =
   5/2 * (32/40 - 5/40) * 8/9 = 5/2 * 27/40 * 8/9 = 3/2 = 1 1/2

Answer 2

A)3/4 + 1/4 x 5=3/4+5/4=8/4=2
b)1 5/6 - 1/6 x 1 1/2=11/6-1/6*3/2=11/6-1/4=22/12-3/12=19/12=1 7/12
c)(1 3/8 + 2 5/6) x 12=(11/8+17/6)*12=(33/24+68/24)*12=101/24*12=101/2=50 1/2
d)1 1/3 x (3 + 2 x 3/4)=4/3*(3+3/2)=4/3*9/2=6
e) 6 1/6 : 1/6 - 2 1/4 : 2=37/6*6-9/4*1/2=37-9/8=35 7/8
f) (4 1/6 - 3 5/7) : 19=(25/6-26/7)*1/19=(175/42-156/42)*1/19=19/42*1/19=1/42
g) 1 7/9 : 2 2/3 - 2/5 : 1 3/5=16/9*3/8-2/5*5/8=2/3-1/4=8/12-3/12=5/12
h) 2 1/2 x (4/5 - (1/2 do potęgi 3) x 8/9=5/2*(4/5-1/8)*8/9=5/2*(32/40-5/40)*8/9=5/2*27/40*8/9=5/2*3/5=3/2=1 1/2