Autor: sandra de castro | Publicado: 2017-01-16T13:53:00-08:00


Matemática 

5º ano/ 2º bimestre



1 – Realize os cálculos com as frações abaixo: (1,0)

a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 3/4 + 2/4
= __________________________________________________________________

b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 5/17 +
12/17 = ______________________________________________________________

c)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 34/ 8 –
23/8 = _____________________________________________________________

d)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 9/11 –
6/11= ________________________________________________________________

2 – operações com denominadores diferentes (2,0):

a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 5/8 + 6/4
=&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;b) 5/2 – 7/4=

c) 8/ 2 – 12/5=&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
d) 5/7 + 4/9=



3- Francisco queria comprar biscoitos, ele pediu !/2 do
biscoito na mercearia. O vendedor disse que custava $ 2,00. Mas se ele pedir 1
kg, quanto ele gastará? (1,0)

&nbsp;&nbsp;&nbsp;&nbsp; 4 – Realize a
multiplicação e divisão de um número natural por fração: (2,0) 

a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 7 X 6/8=
____________________________________________________________________



b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 4 X 8/12 =
_________________________________________________________________



c)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 2 :
1/8=_____________________________________________________________________



d)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; 4: 1/5=
_____________________________________________________________________



&nbsp;5-&nbsp; Uma escola tem 25 professores, dos quais 24%
ensinam Matemática. Quantos professores ensinam Matemática nessa escola? (1,0)

6- Calcule as porcentagens correspondentes (1,0)

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; a) 2% de 700
laranjas

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; b) 40% de 48 m

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; c)38% de 200
Kg]

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; d) 6% de 50
telhas

7 – sabendo que a quadra da escola mede 32, 5 m de
comprimento e 6 m de largura, calcule qual a sua área interna: (1,0)



8- Um terreno mede18 m de largura e 36 m de comprimento.
Qual o perímetro desse terreno? (1,0)











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