Optimus Prime’s Chapter Book.

Question

Optimus Prime reads the entire book called Preschool Prep: Superstar Saga. The Book has 1984 pages in total. If Optimus Prime reads 84% percent of the book. How many pages has he read in total? (Round your answer to the nearest whole number).

Answer 1

This is a "what is 84% of something" question, which is multiplication. Here it's 84% of 1,984 pages.

Before we can do any calculations, need to convert 84% to its decimal equivalent. Either multiply 84 by 0.01, or move the decimal point 2 places to the left. So 84 becomes 0.84.

Now you can do 0.84 x 1,984 either by hand or with a calculator. If the latter, don't even need to do the conversion if you use the "%" key instead of the "=" key (depends on your calculator model).

Always check your result by doing a rough approximation: for example, could do 3/4's of 2000 = 1500. So your answer for the real problem should be in that ballpark. Avoids decimal point or other errors.