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Published byOdette Élodie Sylvain Modified over 6 years ago
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The denominators are the same so we can easily compare the numerators.
3 8 𝑜𝑟 5 8 Would you rather have of a chocolate bar? The denominators are the same so we can easily compare the numerators.
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2 3 𝑜𝑟 7 9 Would you rather have of a chocolate bar?
2 3 𝑜𝑟 7 9 Would you rather have of a chocolate bar? How many pieces of chocolate are you imagining? Why?
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2 3 𝑜𝑟 7 9 Which is bigger, ? 2 3 = ? 9
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2 3 𝑜𝑟 7 9 Which is bigger, ? 2 3 = 6 9 7 9
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2 3 𝑜𝑟 7 9 Which is bigger, ?
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3 4 𝑜𝑟 5 8 Which is bigger, of a chocolate bar?
3 4 𝑜𝑟 5 8 Which is bigger, of a chocolate bar? How many pieces of chocolate are you imagining? Why?
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3 4 𝑜𝑟 5 8 Which is bigger, of a chocolate bar?
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5 6 𝑜𝑟 7 9 Which is bigger, of a chocolate bar?
5 6 𝑜𝑟 7 9 Which is bigger, of a chocolate bar? How many pieces of chocolate are you imagining? Why? The number should be divisible by 6 and 9? 18, 36, 54… are all common multiples of 6 and 9
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5 6 𝑜𝑟 7 9 Which is bigger, of a chocolate bar?
5 6 𝑜𝑟 7 9 Which is bigger, of a chocolate bar? 18 is the lowest common multiple.
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5 6 𝑜𝑟 7 9 Which is bigger, of a chocolate bar?
5 6 𝑜𝑟 7 9 Which is bigger, of a chocolate bar? How many pieces is of the bar?
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5 6 𝑜𝑟 7 9 Which is bigger, of a chocolate bar?
5 6 𝑜𝑟 7 9 Which is bigger, of a chocolate bar? How many pieces is of the bar?
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5 6 𝑜𝑟 7 9 Which is bigger, of a chocolate bar? ×3 ×2 5 6 = 18 15 7 9 = 18 14 5 6 is bigger
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5 6 𝑜𝑟 7 8 Which is bigger, of a chocolate bar?
5 6 𝑜𝑟 7 8 Which is bigger, of a chocolate bar? How many pieces of chocolate are you imagining? Why? The number should be divisible by 6 and 8? 24, 48, 72… are all common multiples of 6 and 8
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5 6 𝑜𝑟 7 8 Which is bigger, of a chocolate bar?
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5 6 𝑜𝑟 7 8 Which is bigger, of a chocolate bar? ×4 ×3 5 6 = 24 20 7 8 = 24 21 7 8 is bigger
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Use equivalent fractions to show which fraction is bigger
𝑜𝑟 𝑜𝑟 𝑜𝑟 3 4 𝑜𝑟 𝑜𝑟 4 9 𝑜𝑟
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Challenge Write down a fraction that is exactly halfway between the two fractions
𝑎𝑛𝑑 𝑎𝑛𝑑 3 4 𝑎𝑛𝑑 5 9
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Put the fractions into ascending order.
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To illustrate this, I have used 32 pieces of chocolate. Why 32?
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Put the fractions into ascending order.
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Put the fractions into ascending order.
×8 ×4 1 4 = 32 8 3 8 = 32 12 ×2 5 16 = 32 10 7 32 no need to change
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Put the fractions in ascending order.
Challenge: Can you write four of your own fractions with different denominators in ascending order that would have a common denominator of: 36? 42? 56?
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The sets of fractions below are in ascending order. True or False?
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