Adding and Subtracting Fractions with common denominators

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Presentation transcript:

Adding and Subtracting Fractions with common denominators 6.1.3.4 Solve real-world and mathematical problems requiring arithmetic with decimals, fractions, and mixed numbers

I can… Add and subtract fractions with common denominators. Self Assessment 5- I can do it without help & teach others. 4- I can do this with no help, but I don’t know if I can explain it. 3- I can do this with a little help. 2- I can do this with a lot of help! 1- I don’t have a clue.

Review What is a numerator? What is a denominator? What does a normal fraction look like? What does a improper fraction look like? What does a mixed number look like?

Like Fractions When fractions have the same denominator they are like fractions. You can add or subtract fractions when you have like fractions. These are all like fractions. 4 7 6 3 2 5 5 5 5 5 5 5

1 6 4 6 5 6 Adding Like Fractions Steps: Make sure that you have like fractions. Add the numerators. Write the sum over the denominator. Write the answer in simplest form. 1 6 4 6 5 6 The answer is: 5 6

Subtracting Like Fractions Steps: Make sure that you have like fractions. Subtract the numerators. Write the difference over the denominator. Write the answer in simplest form. 7 8 3 8 4 8 The answer is: 1 2

Your Turn… 1/5 3/5 1/3 1 2/8 5/6 1 1/4 1 2/7 1/5 1 1 3/7 8/9 1 1/7 1/5 + 2/5 = 2/3 - 1/3 = 3/4 + 2/4 = 5/7 + 3/7 = 3/2 - 1/2 = 3/9 + 5/9 = 2/8 - 2/8 = 3/5 8. 4/5 - 3/5 = 9. 7/8 + 3/8 = 10. 2/6 + 3/6= 11. 5/10 - 3/10= 12. 6/7 + 4/7 = 13. 9/12 + 3/12= 14. 2/7 - 1/7 = 1/3 1 2/8 5/6 1 1/4 1 2/7 1/5 1 1 3/7 8/9 1 1/7

I can… Add and subtract fractions with common denominators. Self Assessment 5- I can do it without help & teach others. 4- I can do this with no help, but I don’t know if I can explain it. 3- I can do this with a little help. 2- I can do this with a lot of help! 1- I don’t have a clue.

Daily Check 6.2 in your math notebook