Question

calcule: 42% de 900, 5% de 800, 36% de 800 e 10% de 120

Answer 1

Multiplica pelo número e divide por 100

42% de 900=
900x42=37800
37800:100=378

5% de 800=
5x800=4000
4000:100= 40

36% de 800=
36x800=28800
28800:100=288

10% de 120=
10x120=1200
1200:100=12

Answer 2

Resposta:

$\huge{\boxed{\boxed{ \tt \: 900/100=9*42= 378 \: }}}\\\\\huge{\boxed{\boxed{ \tt \:800/100=8*5=40 \: }}}\\\\\huge{\boxed{\boxed{ \tt \: 800/100=8*36=288 \: }}}\\\\\huge{\boxed{\boxed{ \tt \: 120/100=1,2*10=12 \: }}}$