4. Realize as seguintes operações matemáticas com as potências de base 10:
a) 2,0x10².3,0x10² b) 3,2x10⁷/5x10³ c) 3,0x10⁵ + 3,0x10⁷ d) 2,32x10‐⁴.3,11x10-³
Soluções para a tarefa
Resposta:
Explicação passo-a-passo:
.
. a) 2,0 x 10² . 3,0 x 10² = 2,0 x 3,0 . 10^2+2
. = 6,0 x 10^4
. = 6,0 x 10.000
. = 60.000
. b) 3,2 x 10^7 / 5 x 10³ =
. 3,2 / 5 . 10^7 / 10³ =
. 0,64 . 10^7-3 =
. 0,64 . 10^4 =
. 0,64 . 10.000 =
. 6.400
. c) 3,0 x 10^5 + 3,0 x 10^7 =
. 3,0 x 10^5 .(1 + 10²) =
. 3,0 x 10^5 . (1 + 100) =
. 3,0 x 10^5 . 101 =
. 303 x 10^5 =
. 3,03 x 10² x 10^5
. 3,03 x 10^7 =
. 3,03 x 10.000.000 =
. 30.300.000
. d) 2,32 x 10^-4 . 3,11 x 10^-3 =
. 2,32 x 3,11 . 10^-4 x 10^-3 =
. 7,2152 x 10^-4-3 =
. 7,2152 x 10^-7 =
. 7,2152 x 0,0000001 =
. 0,00000072152
.
(Espero ter colaborado)