Question

Resolva as seguintes expressões numéricas:
(a) 5+5x5=
(b) 7+8.0-2=
(c) 7+7+7+7x7-7=
(d) 6+2(1+2)=
(e) (4-2)x7+3=
(f ) (14.2+3.4):(2.5+5)=
(g) 13-[(9.2-2)+(5-12:2)-3]=
(h) 21{40-2[7-3-12:4)]} =​

Answer 1

Resposta:

a) 5+25= 30

b) 7+0-2= 5

c) 7+7+7+49-7 = 63

d) 6+2×3 = 6+6= 12

e) 2×7+3= 14+3= 17

f) (28+12)÷(10+5)= 40÷15= 2,6

g) 13-[(18-2)+(5-6)-3]= 13-[16+(-1)-3]= 13-16-1-3= -6

h) 21{40-2[7-3-3]}= 21{40-2×1}= 21{40-2}= 21×38= 798