Fraction computations.

1. Stephen Barnett Fractions

3. Fractions Did you know that 5 out of every 4 students have trouble with fractions?!?!? Wait…..does that make sense?? Sometimes fractions can be confusing, let’s look at how to work with fractions. Fractions

4. Numerator Denominator Fractions

5. Numerator Denominator Four equal parts, so the denominator is four. We only have one unit of these equal parts, so the numerator is one. Fractions

6. Numerator Denominator Four equal parts, so the denominator is four. We only have two units of these equal parts, so the numerator is two. Fractions

7. Numerator Denominator Four equal parts, so the denominator is four. We only have three units of these equal parts, so the numerator is three. Fractions

8. Numerator Denominator Four equal parts, so the denominator is four. We have fours units of these equal parts, so the numerator is four. Fractions

9. Interesting Fractions Fractions

10. Simplifying Fractions Factor the numerator Factor the denominator See if anything cancels to one Simplify 1015 Simplify 8𝑥20𝑥 Simplify 280960 Simplify −1824 Fractions

11. Multiplying Fractions Multiply straight across Simplify 34∙89 3𝑥10∙215𝑥 Fractions

12. Dividing Fractions Change the problem to multiplication using the reciprocal Multiply straight across The reciprocal of a number is found by switching the numerator and denominator of the number Find the reciprocal of the following numbers: 1.) 12 2.) 56 3.) 7 Fractions

13. Dividing Fractions To divide by a fraction, we multiple by its reciprocal. Fractions

14. Adding or Subtracting Fractions If the denominators of the two fractions are the SAME, add or subtract the numerators and keep the same denominator. 57 −37 Fractions

15. Adding or Subtracting Fractions If the denominators of the two fractions are DIFFERENT, we need to find the least common multiple (LCM) of the two denominators. This is called the least common denominator (LCD). Find the LCM of Fractions

16. Adding or Subtracting Fractions Now add the following fractions. Subtract: 45 −13 Fractions

18. Subtracting with Mixed Numbers 527−312 Fractions

19. Subtracting with Mixed Numbers 223−615 Fractions

20. Question and Answer If you have any additional questions on solving an equation or on any other math concept following the webinar, please feel free to contact any of the math specialists in the Success Center for assistance. Lisa Johnson Ext 1411 or lisa.johnson@columbiasouthern.edu Stephen Barnett Ext 1428 or stephen.barnett@columbiasouthern.edu Jonathan Byrd Ext 1215 or jonathan.byrd@columbiasouthern.edu Clarice Ferolito Ext 1496 or clarice.ferolito@columbiasouthern.edu Echelon Method

21. Practice