Check my answer?

What is the order of the numbers from least to greatest?
A= 6.2x10^5, B= 1.1x10^-3, C= 4.3x10^-3, D= 5.2x10^-5

I think it's D,B,C,A (5.2x10^-5, 1.1x10^-3, 4.3x10^-3, 6.2x10^5)

You are correct :)

To check the order of the numbers from least to greatest, you need to consider the magnitude of the numbers represented by the exponents. The smaller the exponent, the greater the value of the number. Let's validate your answer:

D = 5.2x10^-5 (this is the smallest among the given numbers)
B = 1.1x10^-3
C = 4.3x10^-3
A = 6.2x10^5 (this is the largest among the given numbers)

So, your answer D, B, C, A (5.2x10^-5, 1.1x10^-3, 4.3x10^-3, 6.2x10^5) is correct.