Question

1) Calcule os números inteiros:
a) – 8 +6 - 1
b) – 2 -4 -1
c) 12 – 7 + 3
d) 4 + 13 – 21
e) ( +8) – ( + 6)
f) ( - 8) + ( - 5)
g) ( - 3 ) + ( + 9 )
h) ( + 2 ) + ( -7)
i) – 13 + 7 – 2 -8 + 15 – 1
j) + 22 – 3 -14 – 5 + 24 + 12
k) ( - 2 ) - ( - 3 ) + ( + 5)
l) ( + 6 ) + ( - 7) – ( - 2 )

2) Resolva as operações com frações:
a) 3/2 + 2/3
b) 1/3 + 4/6
c) ¾ + 5/6
d) ½ + 1/3 + 1/5
e) 3/2 – 2/3
f) 4/8 – 1/3
g) 1/3 x 8/7
h) 8/2 x 5/3
i) 5 x 6/8 x 4/2
j) 3/2 x 6/5
k) 4/2 + 9/2
l) 7/3 + 5/3
m) 9/2 : 2/4
n) 8 : 2/4
o) 9/3 : 3

Answer 1

Resposta:Segue as respostas abaixo na explicação

Explicação passo a passo:

Questão 1

a) – 8 +6 - 1--> -9+6--->-3

b) – 2 -4 -1---> -7

c) 12 – 7 + 3--->15-7---> 8

d) 4 + 13 – 21--->17-21---> -4

e) ( +8) – ( + 6)---> +8-6--->2

f) ( - 8) + ( - 5)---> -8-5---> -13

g) ( - 3 ) + ( + 9 )---> -3+9---> 6

h) ( + 2 ) + ( -7)---> +2-7---> -5

i) – 13 + 7 – 2 -8 + 15 – 1--->-24+22---> -2

j) + 22 – 3 -14 – 5 + 24 + 12---> +58-22---> 36

k) ( - 2 ) - ( - 3 ) + ( + 5)--->-2+3+5--->-2+8---> 6

l) ( + 6 ) + ( - 7) – ( - 2 )---> +6 -7+2--->+8-7---> 1

Questão 2

a) 3/2 + 2/3--->9/6+4/6--->13/6

b) 1/3 + 4/6--->2/6+4/6--->6/6--->1

c) ¾ + 5/6--->9/12+10/12--->19/12

d) ½ + 1/3 + 1/5--->15/30+10/30+6/30--->31/30

e) 3/2 – 2/3--->9/6-4/6--->7/6

f) 4/8 – 1/3--->4/24:4/4--->1/6

g) 1/3 x 8/7--->8/21

h) 8/2 x 5/3--->40/6:2/2--->20/3

i) 5 x 6/8 x 4/2--->120/16:8/8--->15/2

j) 3/2 x 6/5--->18/10:2/2--->9/5

k) 4/2 + 9/2--->13/2

l) 7/3 + 5/3--->12/3--->4

m) 9/2 : 2/4--->36/4--->9

n) 8 : 2/4--->8/8--->1

o) 9/3 : 3--->9/9--->1