Order 3.21 x 10, 42 x 10^4, and 0.11 x 10^10 from least to greatest

To order the given numbers from least to greatest, we need to compare their magnitudes by looking at the exponents of 10.

First, let's rewrite the numbers using standard decimal notation:

3.21 x 10 = 3.21
42 x 10^4 = 420,000
0.11 x 10^10 = 1,100,000,000

Now we can easily order these numbers from least to greatest:

3.21, 420,000, 1,100,000,000

Therefore, the correct order is 3.21, 420,000, 1,100,000,000.

write them all properly in sci notation

3.21 * 10^1
4.2 * 10^5
1.1 * 10^9

Now it is pretty obvious that they are in order already