I'm Estimate 39% of 120

The answer to your question 39% of 120 is 46.8

ANSWER: 46.8

39% of 120
The word "of" means multiplied. So you will have to multiply 39% x 120
To do that, first step is to change the percent (39%) into a decimal

39% = 0.39  (You move the decimal twice to the left, not right)
There's an invisible decimal behind 9 so ALWAYS move it twice.
= 39(.)⇒ 0.39

Then your final step is to multiply
120 x 0.39

     1 2 0
x 0 . 3 9   ← notice this decimal
                   ∨
  1 0 8 0                     ∨
+ 3 6 0 0                    ∨
                   ∨
   4 6 8 0          There's an invisible decimal before the 0. Move that decimal two times to                                  the left.   4680(.)⇒ 46.8