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MathemaTHINKa
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2 (7/54) - (22/54) = ?
1 (13/18)
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What is a fraction?
a fraction is used to represent the portion/part of a whole
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What does the denominator tell us?
the number of equal parts the whole is divided into
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38/40 - 13/40 + 10/40 = ?
3/8
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14/42 + 7/42 = ?
1/2
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16/28 + 12/28 - 21/28 = ?
1/4
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5/18 + 8/18 = ?
13/18
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16/24 - 12/24 = ?
1/6
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22/50 + 31/50 - 18/50 = ?
7/10
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What is the first step in adding similar fractions?
Add the numerators.
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6/3 + 3/3 = ?
3
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27/30 - 17/30 = ?
1/3
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3 (5/10) - (8/10) = ?
2 (7/10)
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4 (5/4) - 3 (3/4) = ?
1 (1/2)
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12/15 + 13/15 = ?
1
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39/63 - 24/63 - 11/63 = ?
4/63
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56/90 + 14/90 = ?
7/9
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Reduce 63/72 in lowest term.
7/8
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48/75 + 23/75 = ?
71/75
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12/25 + 3/25 + 5/25 = ?
4/5
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Okay!
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