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How much ten (10) + ten (10) = ?
It's twenty (20).
How much is twenty (20) - eleven (11) = ?
It's nine (9).
How much is five (5) + eight (8) = ?
It's thirteen (13).
How much is twenty (20) - ten (10) = ?
It's ten (10).
How much is ten (10) + seven (10) = ?
It's seventeen (17).
How much is seventeen (17) - three (3) = ?
It's fourteen (14).
How much is twelve (12) + four (4) = ?
It's sixteen (16).
How much is nine (9) + nine (9) = ?
It's eighteen (18).
How much is five (5) + six (6) = ?
It's eleven (11).
How much is four (4) + eight (8) = ?
It's twelve (12).
How much is twenty (20) - seven (7) = ?
It's thirteen (13).
