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Arithmetic ability: level three:

Mental multiplication of a two-digit number from 11 to 19 by a two-digit number from 11 to 49.

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12 * 41 =

17 * 31 =

18 * 15 =

11 * 37 =

12 * 24 =

15 * 46 =

13 * 37 =

18 * 27 =

11 * 32 =

17 * 33 =

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