Question

1-calcule o valor de cada expressão:

(a) 1/2+3=

(b) 4-3 3/4=

(c)3 3/4-4=

(d) 4/7-6/2=

(e) -4/3-2/6=

(f) -3/8+2=

(g) -5/2-2+-7/6=

(h) 4/7-1+7/9=

(i) 3/2-1/19=

(j) 3/2--2/3=

(k) - -2/-3+3/-5=

Answer 1

Resposta:

A) 1/2+3= 3,5 → 1/2=0,5

B) 4-3×3/4= 1,75 → 3/4= 0,75

C) 3×3/4-4= -1,75

D) 4/7-×6/2= -2,42

E) -4/3-2/6= -1,66

F) -3/8+2= 1,625

G) -5/2-2+-7/6= -5,66

H) 4/7-1+7/9= 0,349

I) 3/2-1/19= 1,44

J) 3/2--2/3= 2,166

K) - -2/-3+3/-5= -1,266