Question

Order 3.9x10^6, 3,800,000, and 4.2x10^5 from least to greatest.

Answer 1

`\heartsuit` 3800000 can be written as : 3.8 × 10⁶

Among the Given Scientific Notations : 4.2 × 10⁵ is the least

And we can Notice that : 3.9 × 10⁶ is greater than 3.8 × 10⁶

⇒ The Order from Least to Greatest is :

`\heartsuit` 4.2 × 10⁵ < 3800000 < 3.9 × 10⁶

Answer 2

See below

Explanation:

The smallest amount is 4.2*10^5 which is 420,000. You count 5 places from the end to get the power. The number must be something between 1 and 10 to qualify as being scientific notation.

The second smallest number is 3.8 million or 3,800,000

The largest number is 3.9 million or 3,900,000