Question

Efetue as operações a) 6.4x10^7-8,1x10^7 =b) 7,54x10^8-3,7x10^7 =c) 1,28x10^5+4x10^3 =d) (2x10^-5)^2 = e) 10^15x10^-11 =f) 10^2x10^5 =

Answer 1

a) (6.4x10^7)-8,1x10^7 = 54000000-1000000=27000000
b) (7,54x10^8)-3,7x10^7 =717000000
c) (1,28x10^5)+4x10^3 =13200
d) 2x10^-5^2 = ? 
e) 10^15x10^-11 =10000
f) 10^2x10^5 =10000000