Day 22 of 30
Understand percent increase and decrease
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Learning Objective
I can understand percent increase and decrease.
Today we will learn how to understand percent increase and decrease. Math helps us solve problems and understand the world around us.
Percent means "out of 100." The symbol % stands for percent. For example, 50% means 50 out of 100, which is the same as 1/2 or 0.50. To find a percent, divide the part by the whole and multiply by 100. Percents are used everywhere: test scores (80%), discounts (25% off), and statistics (60% of students). Understanding percents helps you compare and understand data!
Let's break this down step by step so it's easy to understand. Follow along with the examples, and don't worry if it takes some practice to get the hang of it!
Remember: Making mistakes is part of learning. If something is tricky, try again, look at the examples, or ask for help.
A number out of 100
A question we need to solve
Instructions
Materials Needed
- Counters or objects
- Pencil
- Practice sheet
What is 50% of 20?
Convert 1/4 to a percent.
A shirt costs $40. It is on sale for 25% off. How much is the discount?
Teaching Tip
For younger learners: Use concrete objects and hands-on activities when teaching understand percent increase and decrease. Keep sessions short (10-15 minutes) and incorporate movement or songs when possible.