Question

1) Calcule as expressões numéricas:
a) 7 +(+4 -1) =
b) 20- (+6 - 3) =
c)(-4) + (+5 -3) =
d) -3 + (+2 -1) =
e) - 10-(-6+5) =
f) 9-(+1-5) =
g) (-2).(-3) +7:7=
h) +5.(-2)-(+25): 5 =
i) 14 +6.(-2) =
j) 20 +8.(+ 1) =
k) 10 + (5.2)=
l)_3+(6+2)=

me ajudem pfvr presiso da resposta pra hj​​

Answer 1

a) 7 +(+4 -1) =

primeiro o parentese

7+(4-1)

7+(3)

7+3

10

b) 20- (+6 - 3) =

20-(6-3)

20-(3)

20-3

17

c)(-4) + (+5 -3) =

-4 + 2

-2

d) -3 + (+2 -1) =

-3+1

-2

e) - 10-(-6+5) =

-10-(-6+5)

-10+1

-9

f) 9-(+1-5) =

9-4

5

g) (-2).(-3) +7:7=

(-2).(-3) + 1

5+1

6

h) +5.(-2)-(+25): 5 =

5-10-25:5

5-10-5

-10

i) 14 +6.(-2) =

14-12

2

j) 20 +8.(+ 1) =

20+8

28

k) 10 + (5.2)=

10+10

20

l)_3+(6+2)=

-3+8

5

ESPERO TER AJUDADO