Question

2. Calculati:
Va rog este urgent.

Answer 1

a. 1/8 + 1/8 x 4 =

1/8 + 1/8 x 4/1 =

1/8+ 1×1 /2 =

1/8 + 1/2 =

1 + 4 × 1 /8 =

= 5/8



b. 1/6 + 1/6 : 1/3 =

1/6 + 1/6 x 3/1 =

1/6 + 1/1 /2 x 1=

1/6 + 1/2 =

1 + 3 x 1 /6 =

= 4/6 = 2/3


c. 4/9 + 3/10 : 6/10 =

4/9 + 3/10 x 10/6 =

4/9 + 1 x 1 /1 x 2 =

4/9 + 1/2 =

2 x 4 + 9 x 1 /18 =

8+9 /18 =

= 17/18


d. 1 1/3 x 2 1/2 + 6 =

11 x 7 /1×2 + 6/1 =

77/2 + 6/1 =

77 + 2 x 6 /2 =

77+12 /2 =

= 89/2


e. 2 1/7 x 1 1/5 - 1/21 : 1/3 =

21 x 11 /7 x 5 - 1/21 x 3/1 =

231/35 - 1 x 1 /7 x 1 =

231/35 - 1/7 =

231 - 5 x 1 /35 =

= 226/35


f. 5/6 : (1/3 + 1/2 : 1/3) =

5/6 : (1/3 + 1/2 x 3/1) =

5/6 : (1/3 + 3/2) =

5/6 : 2 x 1 + 3 x 3 /6 =

5/6 : 11/6 =

5/6 x 6/11 =

5×1 /1×11 =

= 5/11



Bafta!!