Calcula o valor numérico

1. \({0^3} = 0 \times 0 \times 0 = 0\)
   
   
2. \({7^2} = 7 \times 7 = 49\)
   
   
3. \({\left( { – 7} \right)^2} = – 7 \times \left( { – 7} \right) = 49\)
   
   
4. \({10^2} = 10 \times 10 = 100\)
   
   
5. \({\left( { – 10} \right)^3} = – 10 \times \left( { – 10} \right) \times \left( { – 10} \right) = – 1000\)
   
   
6. \( – {10^2} = – \left( {{{10}^2}} \right) = – \left( {10 \times 10} \right) = – 100\)
   
   
7. \({\left( {\frac{3}{5}} \right)^2} = \frac{3}{5} \times \frac{3}{5} = \frac{9}{{25}}\)
   
   
8. \({\left( { – \frac{3}{5}} \right)^2} = – \frac{3}{5} \times \left( { – \frac{3}{5}} \right) = \frac{9}{{25}}\)
   
   
9. \({\left( { – \frac{3}{5}} \right)^3} = – \frac{3}{5} \times \left( { – \frac{3}{5}} \right) \times \left( { – \frac{3}{5}} \right) = – \frac{{27}}{{125}}\)
   
   
10. \({\left( {\frac{3}{5}} \right)^3} = \frac{3}{5} \times \frac{3}{5} \times \frac{3}{5} = \frac{{27}}{{125}}\)
    
    
11. \({\left( { – 0,3} \right)^5} = – 0,3 \times \underbrace {\left( { – 0,3} \right) \times \left( { – 0,3} \right)}_{0,09} \times \underbrace {\left( { – 0,3} \right) \times \left( { – 0,3} \right)}_{0,09} = – 0,3 \times 0,0081 = – 0,00243\)
    
    
12. \({\left( { – 0,3} \right)^4} = – 0,3 \times \left( { – 0,3} \right) \times \left( { – 0,3} \right) \times \left( { – 0,3} \right) = 0,0081\)
    
    
13. \({0,3^5} = 0,3 \times 0,3 \times 0,3 \times 0,3 \times 0,3 = 0,00243\)
    
    
14. \({0,3^4} = 0,3 \times 0,3 \times 0,3 \times 0,3 = 0,0081\)

Repetindo a questão 13 e passando a dízima a fração irredutível, vem:

\({0,3^5} = {\left( {\frac{3}{{10}}} \right)^5} = \frac{3}{{10}} \times \frac{3}{{10}} \times \frac{3}{{10}} \times \frac{3}{{10}} \times \frac{3}{{10}} = \frac{{243}}{{100000}} = 0,00243\)