Question

30. Resolva as expressões numéricas abaixo:
a) 15-(3+2) - 6 =
b) ( 10 -4)-(9-8) + 3 =
c) 50 - [37 - ( 15-8)]=
d) 28 + (50 - (24-2) -10 ) =
e) 52 - {12 + ( 15 -(8-4)]} =
f) 45 +{15 -[( 10 - 8)+( 7 - 4) –3]-4}=
g) 52 + 23 - 2 X (3 + 9) =
h) 62: 32 +4 x 10 - 12 =
i) (72-1): 3 + 2 x 5 =
j) 42-10 + (23-5) =​

Answer 1

a)15-(3+2)-6

15-3-2-6

15-11

4

b)(10-4)-(9-8)+3

6-9+8+3

17-9

8

c)50-[37-(15-8)]

50-[37-7]

50-30

20

d)28+[50-(24-2)-10]

28+[50-22-10]

28+[50-32]

28+18

46

e)52-{12+[15-(8-4)]}

52-{12+[15-4]}

52-{12+11}

52-23

29

f)45+{15-[(10-8)+(7-4)-3]-4}

45+{15-[2+3-3]-4}

45+{15-2-4}

45+9

54

g)52+23-2.(3+9)

75-6-18

75-24

51

h)62:31+4.10-12

2+40-12

42-12

30

i)(73-1):3+2.5

72:3+10

24+10

34

j)42-10+(23-5)

42-10+18

60-10

50

Espero ter ajudado!!!