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Fractions

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1 whole ½ ½ ¼¼¼¼ 1/8 4 8 ? 2 1 2 2 4 ? 8 4 8

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1 whole ½ ½ ¼¼¼¼ 1/8 1 4 ? 8 2 8 3 4 ? 8 6 8

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4 4 2 4 3 4 1 2 1 4 ? 8 ? 8 ? 8 ? 8 ? 8 2 8 4 8 4 8 6 8 8 8 Find Equivalent Fractions

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Closer to 0Closer to ½Closer to 1 7 8 1 8 3 4 1 4 1 whole ¼ 0 1212 1 ¼¼ 1/8

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Compare Fractions 1 4 3 4 ? 8 ? 8 ? 8 1 8 1 8 7 8 7 8 1 8 1 4 3 4 1 2

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Closer to 0Closer to ½Closer to 1 1 whole 3/6 is = to ½. 1/5 is 1 part away from zero 9/10 is 1 part away from zero 5/10 is one half. 5/9 would be a little more than 1/2 4 6 1 5 5 9 4 6 0 1212 1 1 5 9 10 9 5 9

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Compare Fractions 1 5 1 5 4 6 5 9 ? 8 ? 8 1 5 9 10 5 9 9 9 4 6

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Understand: order children from least to greatest Plan: Compare each fraction to the 0, ½ and 1 Solve: 0-----------------------------------------------------1. 1/4 Tim 7/12 Karen 2/3 Randy 5/6 Devon Look Back= double check it is least to greatest, match fractions to names

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1 whole ½ ½ ¼¼¼ 1/8 ¼ What is 1/8 + 1/4? What is 3/8 + 1/2? 1/8 ¼ ½ + ¼ + ½

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Ex: Adding w/in Fraction Families Understand: How much in all- add the fractions Plan: What do I know about 4ths and 8ths? Solve: 2/8 = ¼ 1/4 + 2/4 = 3/4 1/8 ¼ ¼¼¼¼¼¼ Look Back= neither fraction is greater than 1/2, so the answer should be less than 1.

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1/3 1 whole 1/3 1/6 1/12 What is 2/3 - 1/6 ? What is 2/3 - 2/12 ? 1/6 1/3 1/6 1/12 1/3 1/12

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Understand: How much more? Subtract the fractions Plan: What do I know about 3rds and 6ths? Solve: Look Back= 5/6 is almost 1 whole. Taking away 1/3 would leave about ½, so 3/6 makes sense. Susan spent 1/3 hour researching a social studies project on Monday and 5/6 hour on Tuesday. How much more time did she spend working on her project on Tuesday than Monday? 1/3 1/6 1/3 1/6 1/3 1/6

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Ex: Subtracting w/in Fraction Families Understand: How much more? Subtract the mixed numbers Plan: subtract the whole numbers, then the fractions Solve: 5-3 = 2, Look Back= If it were just 5 hrs and 3 hrs, the answer would be 2. So 2 ¼ makes sense. ½ ¼¼ = 2 ¼

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Adding and subtracting fractions and mixed numbers

Adding and subtracting fractions and mixed numbers

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