Question

1.2 × 10e4− 1.5 × 10e3− 2.2 × 10e2 in scientific notation

Answer 1

That answer is correct, I checked:)

Answer 2

Answer: 4.5×10^9

Explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the

10

10

. The sign of the exponent will depend on the direction you are moving the decimal.

4.5

×10

9