Determine:
a) o quadrado de sete décimos
b) o cubo de seis décimos
c) a quarta potência de cinco décimos
d) o quadrado de quatro centésimos
Determine as potências:
a) (1,5)²
b) (0,9)²
c) (0,8)³
d) (0,45)²
e) (0,05)³
f) (1,1)²
g) (0,2)*4
h) (1,03)²
i) (2,7)²
j) (0,1)*5
l) (6,4)²
m) (0,02)²
[tex]\bigcirc[/tex] 1ª questão
[tex]\blacktriangleright a) (\frac{7}{10})^2 = \frac{7^2}{10^2} = \frac{49}{100} = 0,49[/tex]
[tex]\blacktriangleright b) (\frac{6}{10})^3 = \frac{6^3}{10^3} = \frac{216}{1000} = 0,216[/tex]
[tex]\blacktriangleright c) (\frac{5}{10})^4 = \frac{5^4}{10^4} = \frac{625}{10000} = 0,0625[/tex]
[tex]\blacktriangleright d) (\frac{4}{100})^2 = \frac{4^2}{100^2} = \frac{16}{10000} = 0,0016[/tex]
[tex]\bigcirc[/tex] 2ª questão
[tex]\blacktriangleright a) (1,5)^2 = (\frac{15}{10})^2 = \frac{225}{100} = 2,25[/tex]
[tex]\blacktriangleright b) (0,9)^2 = (\frac{9}{10})^2 = \frac{81}{100} = 0,81[/tex]
[tex]\blacktriangleright c) (0,8)^3 = (\frac{8}{10})^3 = \frac{512}{1000} = 0,512[/tex]
[tex]\blacktriangleright d) (0,45)^2 = (\frac{45}{100})^2 = \frac{2025}{10000} = 0,2025[/tex]
[tex]\blacktriangleright e) (0,05)^3 = (\frac{5}{100})^3 = \frac{125}{1000000} = 0,000125[/tex]
[tex]\blacktriangleright f) (1,1)^2 = (\frac{11}{10})^2 = \frac{121}{100} = 1,21[/tex]
[tex]\blacktriangleright g) (0,2)^4 = (\frac{2}{10})^4 = \frac{16}{10000} = 0,0016[/tex]
[tex]\blacktriangleright h) (1,03)^2 = (\frac{103}{100})^2 = \frac{10609}{10000} = 1,0609[/tex]
[tex]\blacktriangleright i) (2,7)^2 = (\frac{27}{10})^2 = \frac{729}{100} = 7,29[/tex]
[tex]\blacktriangleright j) (0,1)^5 = (\frac{1}{10})^5 = \frac{1}{100000} = 0,00001[/tex]
[tex]\blacktriangleright l) (6,4)^2 = (\frac{64}{10})^2 = \frac{4096}{100} = 40,96[/tex]
[tex]\blacktriangleright m) (0,02)^2 = (\frac{2}{100})^2 = \frac{4}{10000} = 0,0004[/tex]
