lesson 1 fractions
TRANSCRIPT
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Fractions 4
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What is a Fraction?
A fraction is a number that tells us
parts of a whole.
This is a whole,
one big circle!
These
are
parts!
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THE TOP NUMBER OF THE FRACTION TELLS US HOW MANY SLICES WE HAVE.
WE CALL IT THE NUMERATOR.
The bottom number tells us how many parts in the whole pizza.We call it the denominator.
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Fractions
• A whole square• A whole tomato
• A whole pear
• A whole banana
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(Fractions) A half ½
• ½ + ½ = 1• Two halves make a whole
+ =
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Halves
Half a pear.Half a kiwi. Etc.
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Quarters
+ + + =
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you can say:
HalfA halfOne half
If the top number is one
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What fraction of the square is blue?
Quarter of the square is blue.
One quarter of the square is blue.
A quarter of the square is blue.
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Remember the ‘s’:
Three quarters
If it is any other number
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•Greater than is when one number is BIGGER than the other number.
Greater than
•Three is GREATER THAN one!
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How do I say this in English?
Five is greater than two.
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How do I say this in English?
Ten is greater than four.
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How do I say this in English?
Four is greater than three.
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•Less than is when one number is SMALLER than the other number.
Less than
•One is LESS THAN three!
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How do I say this in English?
Two is less than five.
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How do I say this in English?
Four is less than ten.
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How do I say this in English?
Eight is less than sixteen.
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•Proper fraction, the numerator is always less than the denominator.
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•Improper fraction is when thenumerator is greater than or equal to the denominator
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•Mixed number is when a whole number and fraction are combined.
Mixed number
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•How can we change this improper fraction into a mixed number?•Divide the numerator by the denominator.•13 divided by 4.
Mixed number
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