Question

1) resolva as operações envolvendo frações. Simplifique sempre que for possivel:

a) 5/6 - 1/4 + 2/3 =

B) 9/13 - 4/13 + 2/13 =

C) 3× 2/5 × 1/3 =

D) 5/12 × 3/5 =

E) 5/4 ÷ 3/2 =

F) 3/10 ÷ 1 1/2 =

G) 1/5 + 3/10 + 5/25

H) 1 - 3/10 =

2) Calcule, aplicando a técnica do canselamento

A) 1/6 × 2/3

B) 4/21 × 3/8

C) 11/12 × 39/33

D)2/3 × 9/7 × 1/10

E)3/5 ÷ 3/5

F) 2/4 ÷ 3/6

Answer 1

1-A) 10-3+8/12
15/12
5/4

B) 9-4+2/13
7/13

C) 6/15
2/5

D) 15/60
1/4

E) 5/4 × 2/3
10/12
5/6

F) 3/10 × 2/11
6/110
3/55

G) 2+3+2/10
7/10

H) 10-3/10
7/10

2-A) 1/3 × 1/3
1/9

B) 1/7 × 1/2
1/14

C) 1/4 × 13/3
13/12

D) 3/7 × 1/5
3/35

E) 1

F) 1/2 × 6/3
1/2 × 2
1