Question

Calcule o valor das expressões:
a) 7+15:3 = (R:12)
b) 4x5+1 = (R:21)
c) 10:2+8 = (R:13)
d) 32+12:2 = (R:38)
e) 20:10+10 = (R:12)
f)7x3-2x5 = (R:11)
g)40-2x4+5 = (R:37)
h)4x3+10:2 = (R:17)
i)50-16:8+7 = (R:55)
j)32:4:2:2 = (R:2)

3) Calcule o valor das expressões

a) (13+2)x3+5 = (R:50)
b)(7+2)x(3-1) = (R:18)
c)(4+2x5)-3 = (R:11)
d) 20-(15+6:3) = (R:3)
e)15+[6+(8-4:2)] = (R:27)
f)40-[3+(10-2):2] = (R:33)
g)[30+2x(5-3)]x2-10 = (R:58)
h) 10+[4+(7x3+1)]-3 = (R:33)

sem gracinhas por favor

Answer 1

Explicação passo-a-passo:

a) 7+15:3

=7+5

=12

b) 4x5+1

=20+1

=21

c) 10:2+8

=5+8

=13

d) 32+12:2

=32+6

=38

e) 20:10+10

=2+10

=12

f)7x3-2x5

=21-10

=11

g)40-2x4+5

=40-8+5

=37

h)4x3+10:2

=12+5

=17

i)50-16:8+7

=50-2+7

=55

j)32:4:2:2

=8:2:2

=2

3

a) (13+2)x3+5

=15×3+5

=45+5

=50

b)(7+2)x(3-1)

=9×2

=18

c)(4+2x5)-3

=14-3

=11

d) 20-(15+6:3)

=20-17

=3

e)15+[6+(8-4:2)]

=15+6+6

=27

f)40-[3+(10-2):2]

=40-3+8:2

=40-3-4

=33

g)[30+2x(5-3)]x2-10

=(30+2×2)×2-10

=34×2-10

=58

h) 10+[4+(7x3+1)]-3

=10+4+22-3

=33

Answer 2

Explicação passo-a-passo:

como efetuar a seguinte conta 7+15÷3=