Question

calcule mentalmente :

A) 50% de R$620,00

B) 25% de R$480,00

C) 10% de R$2.300,00

D) 30% de R$800,00

Answer 1

Resposta:

A) 310,00

B) 120,00

C) 230,00

D) 240,00

Explicação passo-a-passo:

50% = 1/2

1/2 . 620

620/2

310

25% = 1/4

1/4 . 480

480/4

120

10% = 1/10

1/10 . 2300

2300/10

230

30% = 3/10

3/10 . 800

(3 . 800)/10

2400/10

240

Answer 2

A) R$310,00

B) R$120,00

C) R$230,00

D) R$240,00