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Write an equation for the number 18.
10+8=18
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Write how many.
17
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Write an equation for the number 19.
10+9=19
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Write how many.
20
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Write how many.
15
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Write an equation for the number 12
2+10=12
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Write how many.
11
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Write an equation for the number 16.
6+10=16
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