Question

Which shows the expression below simplified?

0.024 + (2.2 × 10^-4)
A. 2.224 × 10^-4
B. 2.224 × 10^-6
C. 2.422 × 10^-2
D. 2.422 × 10^-4

Answer 1

0.024 + 0.00022

Answer 2

Wait I'm confused

Answer 3

What would the answer be?

Answer 4

0.024 + 0.00022 = 0.02422

to move the decimal so that you get 2.422 you have to shift the decimal two places to the right, so 10^-2

Answer 5

Thank you I get it now.

Answer 6

every time you see 10^x you can shift the decimal by x spaces (depending on minus or plus you move left or right)