These exercises and activities are for students to use independently of the teacher to practice number properties.
Converting fractions to percentages using the double number line
Proportions and Ratios, AP (Stage 8).
Homework with answers (PDF or Word)
Prior knowledge.
- Simplify fractions
- Convert fractions to decimals
- Understand the double number line and how to use it proportionately
Background
Note that this strategy is nice when the number is easy to convert to 100. Sometimes it is necesaary to simplify the fraction first, for example 18/24 simplifies to 3/4 and then 75/100. So some discussion is needed about this before setting the activity.
Comments on the Exercises
Exercise 1
Asks students to use a double number line tochange fractions to percentages. For example, 12/20.
Exercise 2
Asks students to solve a word problem that involves changing fractions to percentages.
Independent Activity
Asks students to compare "25% off", "one-third off" and "40% off" sales by using an arbitary budget.