operação com notação científica - divisão a)9,32.10^5 : 1,1.10^2 b)8,34.10^-3 : 2,2.10^6 c)8,3.10^-6 : 2,1.10^-3 d)1,6.10^2 : 2,56.10^3 e)1,8.10^2 : 2,32.10^3 f)9,3.10^-6 : 3,1.10^-3 g)4.10^2 : 2.10^4 h)6.10^6 : 2.10^-3 obs:lembrando q na divisao os expoentes subtrai
Soluções para a tarefa
a) 8,47 x 10^3;
b) 3,37 x 10^-9;
c) 3,95 x 10^-3;
d) 6,25 x 10^-2;
e) 7,75 x 10^-2;
f) 3 x 10^-3;
g) 2 x 10^-2;
h) 3 x 10^9.
Resposta:
Explicação:
a)
= 9,32.10^5 : 1,1.10^2
= 932. 10^(-2).10^5 : 11.10^(-1).10^2
= 932/11 . 10^3 : 10^1
= 84,72 . 10^3.10^(-1)
= 84,72 . 10^2
= 8,472 . 10 . 10^2
= 8,472 . 10^3
___________________
b)
= 8,34.10^-3 : 2,2.10^6
= 834. 10^(-2).10^(-3) : 22.10^(-1).10^6
= 834/22. 10^(-5) : 10^5
= 37,909 . 10^(-5).10^(-5)
= 3,7909 . 10^1 . 10^(-10)
= 3,7909 . 10^(-9)
__________________
c)
= 8,3.10^-6 : 2,1.10^-3
= 83.10^(-1).10^(-6) : 21 . 10^(-1).10^(-3)
= 83.10^(-7) : 21.10^(-4)
= 83/21 . 10^(-3)
= 3,952 . 10^(-3)
____________________
d)
= 1,6.10^2 : 2,56.10^3
= 16.10^(-1).10^2 : 256.10^(-2).10^3
= 16/256 . 10^1 : 10^1
= 1/16
= 0,0625
= 6,25. 10^(-2)
__________________
e)
= 1,8.10^2 : 2,32.10^3
= 18. 10^(-1).10^2 : 232. 10^(-2).10^3
= 18 . 10^1 : 232 . 10^1
= 18 / 232
= 0,0775
= 7,75.10^(-2)
______________________
f)
= 9,3.10^-6 : 3,1.10^-3
= 3 . 10^(-6). 10^3
= 3. 10^(-3)
_______________
g)
= 4.10^2 : 2.10^4
= 2. 10^2 . 10^(-4)
= 2 . 10^(2-4)
= 2 . 10^(-2)
______________
h)
= 6.10^6 : 2.10^-3
= 6/2 . 10^6 . 10^3
= 3 . 10^(6+3)
= 3 . 10^9