Math 5-4: Warm-up

Math 5-4: Finding Percents Mentally Objective: How to compute mentally with percents.

Finding Percents Mentally 1% - move decimal point 2 places to left 1% of 195 = 0.01 x 195 or 1.95 10% - move decimal point 1 place to left 10% of 3.9 = 0.10 xf 3.9 or 0.39

Finding Percents Mentally other common percents: easier to use fraction form of the percent use cheat sheet 25% of 68 = ¼ x 68 or 17 33 1/3% of 57 = 1/3 x 57 or 19

Examples 40% of 80 66 2/3% of 75 10% of 65 1% of 304

Assignment 5-4 PS (o) Quiz: Lessons 3-6 – 11/10 Chapter 5 TEST – 11/17