Exercícios

1-Faça a leitura com atenção.
a)3,456._________________________
b)1,19:________________
c)27,4:__________________________________
d)342cm:_______________________________
e)290mm:_____________________________
f)10m:________________________________
g)380KM:________________________________
h)CR$ 4.900,90:__________________________
l) CR$ 131,00:________________________
m)70%:______________________________
n)18%:________________________________


2-Calcule.
15% de 380 4% de CR$ 324,00 96% de CR$ 530,00
___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
1/8 de 48 2/3 de 12 1/6 de 360
____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
1- Transforme, completando o quadro.


Fração decimal Número decimal Porcentagem
16 por cento
45 por cento
7 por cento



4- Arme e efetue.
a-7,358 +0,28 + 3= b-7,2 - 3,453 = c-74,12 X 8,3=


5-Qual o número decomposto?
5x1000 +78x100=_____________________________________________
45x1000 +5x10=__________________________________________
8x1000 +6x100 +9x10=________________________________

6-Efetue e tira a prova
a-15776:68= b- 714:7=