Fractions. Less than 1 whole Mixed Numbers- in-between numbers Explorations with fractions: –Comparing and ordering fractions –Adding and Subtracting.

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Presentation transcript:

Fractions

Less than 1 whole Mixed Numbers- in-between numbers Explorations with fractions: –Comparing and ordering fractions –Adding and Subtracting fractions and mixed numbers within families.

1 whole ½ ½ ¼¼¼ 1/8 ¼

Closer to 0Closer to ½Closer to whole ¼ 1/8 ½ ¼¼

Closer to 0Closer to ½Closer to whole

½ ½ ¼¼¼ 1/8 ¼ What combinations of fractions = 1 whole?

? 8 ? 8 ? 8 ? 8 ? Find Equivalent Fractions

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

1 whole ½ ½ ¼¼¼ 1/8 ¼ What is 1/2 - 1/8 What is 3/8 - 1/4 What is 2 5/ /2

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 2/4 = ½ ½ + ¼ = 3/4 Look Back= neither fraction is greater than 1/2, so the answer should be less than 1.

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, ½ = 2/4 2/4 -1/4 = 1/4 = 2 1/4 Look Back= If it were just 5 hrs and 3 hrs, the answer would be 2. So 2 ¼ makes sense.