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Finding Common Denominators for Adding and Subtracting Fractions for Visual Learners

Finding Common Denominators for Adding and Subtracting Fractions for Visual Learners. Fortner. What is a Common Denominator ? "Common" Denominator just means that the denominators in two (or more) fractions are common, or the same. There are 3 Simple Steps to add fractions:

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Finding Common Denominators for Adding and Subtracting Fractions for Visual Learners

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  1. Finding Common DenominatorsforAdding and Subtracting FractionsforVisual Learners Fortner

  2. What is a Common Denominator? "Common" Denominator just means that the denominators in two (or more) fractions are common, or the same.

  3. There are 3 Simple Steps to add fractions: • Step 1: Make sure the bottom numbers • (the denominators) are the same • Step 2: Add the top numbers (the numerators), • put the answer over the denominator. • Step 3: Simplify the fraction (if needed).

  4. STEP 1: Find the least common denominator.. 4, 8, 12, 16, 20, 24 10, 20, 30, 40, 50

  5. STEP 2: Determine what numerator will change. Multiply the denominators. 5 2 2 5 2 5 Tip: What you do to the Bottom.. You have to do to The top!! Tip: What you do to the Bottom.. You have to do to The top!!

  6. STEP 3: Now work the new problem.

  7. STEP 1 Find Least Common Denominator 9, 18, 27, 36, 45 6, 12, 18, 24, 30, 36

  8. STEP 2 Determine Denominator and numerator change and multiply Tip: What you do to the Bottom.. You have to do to The top!! 2 14 3 3 2 3

  9. STEP 3 Work the new problem

  10. STEP 1 Find Least Common Denominator 6, 12, 18, 24, 30, 36 9, 18, 27, 36, 45

  11. STEP 2 Determine Denominator and numerator change and multiply 3 3 2 4 3 2

  12. STEP 3 Work the new problem

  13. There are 3 simple steps to subtract fractions • Step 1. Make sure the bottom numbers • (the denominators) are the same • Step 2. Subtract the top numbers • (the numerators). • Put the answer over the same denominator. • Step 3. Simplify the fraction

  14. STEP 1 Find Least Common Denominator 14, 28, 42, 56, 70, 8, 16, 24, 32, 40, 48, 56

  15. STEP 2 Determine Denominator and numerator change and multiply 7 7 4 36 4 7

  16. STEP 3 Work the new problem

  17. STEP 1 Find Least Common Denominator 16, 32, 48, 64, 80, 96 10, 20, 30, 40, 50, 60, 70, 80 STEP 2 Determine Denominator and numerator change and multiply 15 8 8 5 5 8

  18. STEP 3 Work the new problem

  19. On your own:

  20. Copy and Print Worksheets for Powerpoint

  21. Copy and Print Multiplication Chart

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