This math topic focuses on calculating the percent change in shrinking numbers, specifically in multiples of 10%. It includes exercises where students find the percentage decrease when a number decreases from its original value by given percentages. Each problem presents an initial calculation of what 10% of various numbers such as 80, 20, 60, 40, 10, 100 is, followed by a question asking what the percentage change is when that number reduces to a lower value. Answer choices are provided in multiple-choice format to reinforce understanding of percentage decrease calculations.
Work on practice problems directly here, or download the printable pdf worksheet to practice offline.
Complete these online problems with 80% or 4 correct answers in a row. Results are immediate.
What percent did the number change by?
10% of 40 is 4
What is the % change if 40 shrinks to 32