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Objective:

Objective:. Students will add and subtract mixed numbers (6-5). Vocabulary:. None. Steps:. Read all directions!!!!! Write down the problem. Find the LCD when needed. Find your new numerators. Add or subtract your numerators. Keep same denominator. Add or subtract your whole #’s.

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Objective:

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  1. Objective: Students will add and subtract mixed numbers (6-5).

  2. Vocabulary: • None

  3. Steps: • Read all directions!!!!! • Write down the problem. • Find the LCD when needed. • Find your new numerators. • Add or subtract your numerators. • Keep same denominator. • Add or subtract your whole #’s. • Simplify.

  4. Examples Find 4 2/3 – 2 1/3 Subtract the fractions 4 2/3 - 2 1/3 1/3

  5. Examples Find 4 2/3 – 2 1/3 Subtract the subtract the fractions whole numbers 4 2/3 4 2/3 - 2 1/3- 2 1/3 1/3 2 1/3

  6. Examples Find 12 ¼ + 3 5/6 Find equivalent fractions 12 ¼ 12 3/12 + 3 5/6+ 3 10/12

  7. Examples Find 12 ¼ + 3 5/6 Find equivalent Add the fractions fractions 12 ¼ 12 3/12 12 3/12 + 3 5/6+ 3 10/12+ 3 10/12 13/12

  8. Examples Find 12 ¼ + 3 5/6 Find equivalentAdd the Add the fractions fractions whole #s 12 ¼ 12 3/12 12 3/12 12 3/12 + 3 5/6+ 3 10/12+ 3 10/12+ 3 10/12 13/12 15 13/12

  9. Examples Find 12 ¼ + 3 5/6 Find equivalentAdd theAdd the fractions fractions whole #s 12 ¼ 12 3/12 12 3/12 12 3/12 + 3 5/6+ 3 10/12+ 3 10/12+ 3 10/12 13/12 15 13/12 15 + 1 1/12 = 16 1/12Rename 13/12 as 1 1/12.

  10. Examples Evaluate x – y if x = 5 9/10 and y = 2 ½. x – y = 5 9/10 – 2 ½The LCM of 2 & 10 is 10.

  11. Examples Evaluate x – y if x = 5 9/10 and y = 2 ½. x – y = 5 9/10 – 2 ½ The LCM of 2 & 10 is 10. = 5 9/10 – 2 5/10 Rename 2 ½ as 2 5/10

  12. Examples Evaluate x – y if x = 5 9/10 and y = 2 ½. x – y = 5 9/10 – 2 ½ The LCM of 2 & 10 is 10. = 5 9/10 – 2 5/10 Rename 2 ½ as 2 5/10 = 3 4/10 or 3 2/5 remember to simplify

  13. Examples Find the perimeter of the triangle. 6 ¾ in. 2 ½in 7 1/8 in. P= 2 ½ + 6 ¾ +7 1/8The LCM of 2,4, and 8 is 8.

  14. Examples Find the perimeter of the triangle. 6 ¾ in. 2 ½in 7 1/8 in. P= 2 ½ + 6 ¾ +7 1/8 The LCM of 2,4, and 8 is 8. P= 2 4/8 + 6 6/8 + 7 1/8Rename ½ as 4/8 & ¾

  15. Examples Find the perimeter of the triangle. 6 ¾ in. 2 ½in 7 1/8 in. P= 2 ½ + 6 ¾ +7 1/8 The LCM of 2,4, and 8 is 8. P= 2 4/8 + 6 6/8 + 7 1/8 Rename ½ as 4/8 & ¾ P = 4+6+1 +2+6+7Add the fractions. Then add 8 the whole numbers.

  16. Examples Find the perimeter of the triangle. 6 ¾ in. 2 ½in 7 1/8 in. P= 2 ½ + 6 ¾ +7 1/8 The LCM of 2,4, and 8 is 8. P= 2 4/8 + 6 6/8 + 7 1/8 Rename ½ as 4/8 & ¾ P = 4+6+1 +2+6+7 Add the fractions. Then add 8 the whole numbers. P = 11/8 +15

  17. Examples Find the perimeter of the triangle. 6 ¾ in. 2 ½in 7 1/8 in. P= 2 ½ + 6 ¾ +7 1/8 The LCM of 2,4, and 8 is 8. P= 2 4/8 + 6 6/8 + 7 1/8 Rename ½ as 4/8 & ¾ P = 4+6+1 +2+6+7 Add the fractions. Then add 8 the whole numbers. P = 11/8 +15 P = 15 11/8 or 16 3/8 Rename 11/8 as 1 3/8. 15 + 1 3/8 = 16 3/8

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