Houghton Mifflin Harcourt
Holt, Rinehart and Winston: Homework Help Independent Practice: Estimating Percents
Get independent practice estimating percents. Each incorrect response gets a text box explanation and another try. Correct responses are confirmed.
Shmoop University
Shmoop: Ratios & Percentages: Estimating Percentages
The mathematics tutorial examines how to estimate percentages using shortcuts. Students learn about the concept through notes, examples, and practice problems.