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What a Factor Is

Part of the Factors & Fractions section of Coddy's Pre-Algebra journey. Lesson 1 of 56.

$24 chairs set out in 4 rows of 6$

24 chairs fit in 4 rows of 6. So 4 and 6 are a factor pair of 24. A factor goes into a number with nothing left over.

5 is not a factor: rows of 5 leave chairs over.

To find all factors, try 1, 2, 3 and so on. Stop when the pairs repeat.

Challenge

Mark every factor of 28 on the number line. There are six of them.

Start the lesson to read it in the interactive player and track your progress.

All lessons in Factors & Fractions

1Factors and Multiples

What a Factor IsDivisibility Rules Multiples Prime or Composite Recap: Factors and Multiples

4What a Fraction Is

Parts of a Whole Fractions on the Line A Fraction of a Number Improper Fractions Recap: What a Fraction Is

7Multiplying Fractions

Top Times Top Cancel First Whole Times Fraction A Fraction of a Fraction Recap: Multiplying Fractions

10Fractions in Stories

Part of a Group What Is Left Sharing a Fraction Scaling a Recipe Recap: Fraction Stories

2Prime Factorization

Factor Trees One Tree per Number Using Exponents Recap: Prime Factorization

5Equivalent Fractions

Same Amount, New Name Simplifying Fractions Simplify in Steps Comparing Fractions Recap: Equivalent Fractions

8Dividing Fractions

How Many Fit Multiply by the Reciprocal Dividing by a Whole Number How Many Bags Recap: Dividing Fractions

11Final Challenges

Final: Brackets and Bars Final: Mixed and Divided Final: The Gift Ribbon Final: The Missing Prime Final: Fractions on the Line

3GCF and LCM

Greatest Common Factor GCF from Prime Factors Least Common Multiple LCM from Prime Factors GCF or LCM?Recap: GCF and LCM

6Adding and Subtracting

Same Denominator Different Denominators Subtracting Fractions The Least Common Denominator Negative Results Recap: Adding and Subtracting

9Mixed Numbers

Mixed to Improper Improper to Mixed Adding Mixed Numbers Multiplying Mixed Numbers Recap: Mixed Numbers