Question

quanto e
(eu quero com a conta )

25%de 4000 =
10%de 2800 =
20%de 2800=
1%de 2800=
100%de 350=

Answer 1

25/100 × 4000 = 25×4000/100

1×4000/4 = 1000

10/100 × 2800 = 10×2800/100

1×2800/10 = 280

20/100 × 2800 = 20×2800/100

1×2800/5 = 560

1/100 × 2800 = 1×2800/100 = 28

100/100 × 350 = 100×350/100 = 350

Answer 2

a)
25%. 4000 = 1000

25   . 4000 =   25.40 = 1000
100
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
b)
10% 2800 = 280

10    . 2800 = 10.28 = 280
100
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
c)
20% 2800 = 560

20   . 2800 =    20.28 = 560
100
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d)
1% 2800 = 28

  1   . 2800 =   2800  = 28
100                  100
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
e)
100%. 350 = 100 . 350 = 1.350 = 350
                    100