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whats 9 plus 10? is it 21?

 Dec 10, 2015

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 #3
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When you have a ten ( which is a two digit number) plus any one digit number ( such as a nine) the one digit number simply replaces the zero.🇦🇺

 Dec 10, 2015
 #1
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its 19.......

 Dec 10, 2015
 #2
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Yes! well done

 Dec 10, 2015
 #3
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+8
Best Answer

When you have a ten ( which is a two digit number) plus any one digit number ( such as a nine) the one digit number simply replaces the zero.🇦🇺

Guest Dec 10, 2015

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