what are fractions?. what is a fraction? a fraction is a part of a whole –l–like a piece of a...
TRANSCRIPT
What Are Fractions?What Are Fractions?
What is a Fraction?What is a Fraction?
• A fraction is a part of a whole– like a piece of a whole pizza or a whole pie
• A fraction is also a part of a set– like in a dozen cupcakes
Equal PartsEqual Parts
• To have a fraction, you must have equal parts
not equal parts
equal parts
What does a fraction look like?
What does a fraction look like?
1
4 denominator
numerator
How Do We Read Fractions?
How Do We Read Fractions?
• one half21
31
41
61
81
101
• one third
• one fourth
• one sixth
• one eighth
• one tenth
the number of peanut butter cookies
the total number of cookies
1
Parts of a SetParts of a Set
• Example - We made 6 cookies. 1 is peanut butter and 5 are chocolate chip. How would you write the number of peanut butter cookies as a fraction.
6
Parts of a SetParts of a Set
• What fraction of the triangles are red?
red triangles
total number triangles
1
2
Parts of a SetParts of a Set
• What fraction of the boxes are orange?
orange boxes
total number boxes
1
4
Parts of a SetParts of a Set
• What fraction of the stars are yellow?
yellow stars
total number stars
4
10
Parts of a WholeParts of a Whole
• Example – I ordered one whole pizza. It was cut into 8 slices. I ate 2 slices. What fraction of the whole pizza did I eat?
the number of slices I ate
the total number of pizza slices
2
8
Parts of a WholeParts of a Whole
• What is the fraction of the colored part of each picture below?
21
31
41
81
61
Parts of a WholeParts of a Whole
• What is the fraction of the blue part of the picture below?
4
Parts of a WholeParts of a Whole
• What is the fraction of the colored part of each picture below?
32
64
43
22
87