Question

Resolva as seguintes operacoes com as respostas em notação científica a) 1200000 X 500000
B) 0,00015 X 0,002
C)450000/0,0009

Answer 1

Explicação passo-a-passo:

a) • $\sf 1.200.000=1,2\cdot10^6$

• $\sf 500.000=5\cdot10^5$

Assim:

$1,2\cdot10^6\cdot5\cdot10^5=6\cdot10^{11}$

b) • $\sf 0,00015=1,5\cdot10^{-4}$

• $\sf 0,002=2\cdot10^{-3}$

Então:

$\sf 1,5\cdot10^{-4}\cdot2\cdot10^{-3}=3\cdot10^{-7}$

c) • $\sf 450.000=4,5\cdot10^5$

• $\sf 0,0009=9\cdot10^{-4}$

Assim:

$\sf \dfrac{4,5\cdot10^5}{9\cdot10^{-4}}=0,5\cdot10^{9}=5\cdot10^8$