This math topic focuses on calculating the percent reduction of a number by multiples of 10%, serving as an introductory concept to percentages. The problems require understanding how to decrease a given number by 10%, 20%, or 30%, and identifying the resulting value from a set of multiple-choice answers. Each question provides initial guidance by mentioning the value of 10% of the number, which reinforces the computation concept of finding a percentage of a given number.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
Complete this topic with 80% correct, working as fast as you can! Results are immediate.
Calculate the final number when it changes by a percentage
10% of 80 is 8.
What is 20% less than 80