Answer:
1) 1.5 x 10^3 = 1500 Explanation: move your decimal 3 times to the right ->
2) 1.5 x 10^-3 = 0.0015 Explanation: move your decimal 3 times to the left
3) 3.75 x 10^-2 = 0.0375 Explanation: move your decimal 2 times to the left
4) 3.75 x 10^2 = 375 Explanation: move your decimal to the right twice
5) 2.2 x 10^5 = 220000 Explanation: move your decimal to the right 5 times