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04/10/2023 Bitsy Griffin Lesson 2-23 1
Adding & Subtracting Fractions with like
denominators12/7/09EQ: How do I add & subtract fractions with the same denominator?
04/10/2023 Bitsy Griffin Lesson 2-23 2
Review:•Whole Number
04/10/2023 Bitsy Griffin Lesson 2-23 3
Review:•Decimal•0.5•3.4678•Part of a whole
04/10/2023 Bitsy Griffin Lesson 2-23 4
Review:•Fraction•¼•8/9•49/50
04/10/2023 Bitsy Griffin Lesson 2-23 5
Review:•Mixed Number•8 ¼•6 8/9•50 49/50
04/10/2023 Bitsy Griffin Lesson 2-23 6
Review:• Improper Fraction•8/4•3/2•90/12
04/10/2023 Bitsy Griffin Lesson 2-23 7
Review:•What is the relationship between a mixed number and an improper fraction?
04/10/2023 Bitsy Griffin Lesson 2-23 8
Review:•How can you change back and forth between the two?
04/10/2023 Bitsy Griffin Lesson 2-23 9
Review:•How can you change back and forth between the two?
04/10/2023 Bitsy Griffin Lesson 2-23 10
Review:•10/4•22/10•18/5•14/6
•2 2/4•2 2/10•3 1/5•2 2/6
•2 1/2•2 1/5•3 1/5•2 1/3
04/10/2023 Bitsy Griffin Lesson 2-23 11
Review:•10/4•22/10•18/5•14/6
•2 2/4•2 2/10•3 1/5•2 2/6
04/10/2023 Bitsy Griffin Lesson 2-23 12
Problem 1:•Mel ran 1/6 mile on a road near his cabin.
•Then he ran 4/6 of a mile on a trail to the lake.
04/10/2023 Bitsy Griffin Lesson 2-23 13
Problem 1:
1/6 1/6 1/6 1/6 1/6 1/6
•How far did Mel run?•5/6 of a mile
04/10/2023 Bitsy Griffin Lesson 2-23 14
Problem 1:
1/6 1/6 1/6 1/6 1/6 1/6
•How much farther was distance on the trail than the road?
•3/6 •1/2
04/10/2023 Bitsy Griffin Lesson 2-23 15
Problem 2:•a.m. fraction?•2/8•p.m. fraction?•5/8
04/10/2023 Bitsy Griffin Lesson 2-23 16
Problem 2:•What total fraction of roller coasters you rode?
•2/8 + 5/8 =•7/8
04/10/2023 Bitsy Griffin Lesson 2-23 17
Problem 2:•How many more roller coasters did you ride in the afternoon?
•5/8 – 2/8 =•3/8
04/10/2023 Bitsy Griffin Lesson 2-23 18
Practice together:•9/10 + 3/10 =•9/10 – 3/10 =•Don’t forget to reduce (or simplify)!
•13/10•6/10•3/5
04/10/2023 Bitsy Griffin Lesson 2-23 19
Practice together:•¼ + ¼ =•5/6 – 3/6 =•6/9 + 2/9 =
•½ •2/6•8/9
• •1/3
04/10/2023 Bitsy Griffin Lesson 2-23 20
Think about it:•Why does ¼ + ¼ NOT equal 2/8?
04/10/2023 Bitsy Griffin Lesson 2-23 21
EQ:•How do I add & subtract fractions with the same denominator?
