Use o processo prático para efetuar as seguintes divisões :
a) 3/8 : 2/5
b) 4 : 3/5
c) 1 2/3 : 5
d) 1/4 : 2/3
e) 2 : 1 3/4
f) 3/8 : 9/2
g) 3/4 : 3
h) 5/6 : 1/2
Usuário anônimo:
na e, seria 13/4 ou 1 inteiro e 3/4?
Soluções para a tarefa
Respondido por
43
a) 3/8 : 2/5
3 . 5 = 15
---- ----- -------
8 2 16
***********************************
b) 4 : 3/5
4 . 5 = 20
------ -------
3 3
*************************
c) 1 2/3 : 5
1 2 . 1 = 3.1 + 2 . 1
----- ----- -------------- -----
3 5 3 5
5 . 1 1
----- ------ = -----
3 5 3
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d) 1/4 : 2/3
1 . 3 3
------ ------ = ----
4 2 8
*************************
e) 2 : 1 3/4
2 : 1 3 = 2 : 4 + 3
----- ----------
4 4
2 : 7 = 2 . 4 = 8
------ ------ -----
4 7 7
********************************************
f) 3/8 : 9/2
3 . 2 = 6 (:6) 1
-------- ------ ----- = ------
8 9 72 (:6) 12
**************************************
g) 3/4 : 3
3 . 1 = 1
--- ----- -----
4 3 4
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
h) 5/6 : 1/2
5 . 2 = 10 (:2) 5
---- ---- ------ = -----
6 1 6 (:2) 3
3 . 5 = 15
---- ----- -------
8 2 16
***********************************
b) 4 : 3/5
4 . 5 = 20
------ -------
3 3
*************************
c) 1 2/3 : 5
1 2 . 1 = 3.1 + 2 . 1
----- ----- -------------- -----
3 5 3 5
5 . 1 1
----- ------ = -----
3 5 3
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
d) 1/4 : 2/3
1 . 3 3
------ ------ = ----
4 2 8
*************************
e) 2 : 1 3/4
2 : 1 3 = 2 : 4 + 3
----- ----------
4 4
2 : 7 = 2 . 4 = 8
------ ------ -----
4 7 7
********************************************
f) 3/8 : 9/2
3 . 2 = 6 (:6) 1
-------- ------ ----- = ------
8 9 72 (:6) 12
**************************************
g) 3/4 : 3
3 . 1 = 1
--- ----- -----
4 3 4
¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨¨
h) 5/6 : 1/2
5 . 2 = 10 (:2) 5
---- ---- ------ = -----
6 1 6 (:2) 3
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