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Mini-Quiz: Adding Fractions

by Ron Kurtus (updated 18 January 2022)

Take this Mini-Quiz to check your understanding of the lesson material.

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1. What happens if the numerators are the same but the denominators are different?

You can add the two fractions by adding the denominators.

That never can happen

You cannot add the fractions in that form

2. Why it is called cross multiplying?

You cross out equal terms

You multiply across the two fractions, numerator times denominator

It relates to when you multiply two fractions together to get a product

3. What is the lowest common denominator when you add 2/13 + 5/39?

39

26

13

If you got all three correct, you are on your way to becoming a Champion in Arithmetic. If you had problems, you had better look over the material again.

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Where are you now?

School for Champions

Arithmetic topics

Mini-Quiz: Adding Fractions

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Arithmetic topics

• Basics of Arithmetic

Numbers

• Numbers and the Numeral System
• Roman Numerals
• Using the Multiplication Table
• Reducing Numbers to Prime Factors

Fractions

• Overview of Fractions
• Multiplying Fractions
• Dividing Fractions
• Adding Fractions

Also see

• Arithmetic Survey Results
• Algebra
• Physical Science
• Chemistry
• Good Grades

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