Question

Find the sum or difference. Write your answers in scientific notation.

(6.5×10−4)−(1.9×10−5)=

(5.3×109)+(2.8×109)=

Answer 1

`6.31*10^(-4) \\8.1*10^(9)`

Explanation:

0.00065 - 0.000019 = 0.000631

Move back 4 decimal places.

5300000000 + 2800000000 = 8100000000

Move forward 9 decimal places.

Hope this helps! If you need help on converting them back to scientific notation or getting the value of the exponent, just ask!