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ELM: CSU Math Study Guide16 chapters | 140 lessons

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Using ratios and proportions in mathematics can help solve a number of problems. These assessments give you several sample scenarios of ratios and proportions and ask you to do the calculating.

This quiz and worksheet test your ability to:

- Solve proportions based on a given ratio
- Determine the ratio of boys to girls in a class given the number of boys
- Find the ratio of pets at a pet shop with the information provided

Students can familiarize themselves with these skills:

**Problem solving**- calculate ratios and proportions using sample problems**Reading comprehension**- ensure that you draw the most important information from the lesson on this topic**Knowledge application**- use your knowledge to set up proportions with given information

Watch the lesson titled Calculations with Ratios and Proportions to find out more about:

- The essential characteristics of ratios
- Definition of a proportion
- Uses of proportions and ratios

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Lesson
13 in chapter 2 of the course:

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ELM: CSU Math Study Guide16 chapters | 140 lessons

- How to Build and Reduce Fractions 3:55
- How to Find Least Common Denominators 4:30
- Comparing and Ordering Fractions 7:33
- Changing Between Improper Fraction and Mixed Number Form 4:55
- How to Add and Subtract Like Fractions and Mixed Numbers 4:14
- How to Add and Subtract Unlike Fractions and Mixed Numbers 6:46
- Multiplying Fractions and Mixed Numbers 7:23
- Dividing Fractions and Mixed Numbers 7:12
- Practice with Fraction and Mixed Number Arithmetic 7:50
- Estimation Problems using Fractions 7:37
- Solving Problems using Fractions and Mixed Numbers 7:08
- How to Solve Complex Fractions 5:20
- Calculations with Ratios and Proportions 5:35
- Practice Problems for Calculating Ratios and Proportions 5:59
- Go to ELM Test - Numbers and Data: Rational Numbers

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