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Arithmetic ability: level four:

Mental multiplication of a two-digit number from 11 to 50 by a two-digit number from 11 to 50.

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21 * 19 =

17 * 17 =

16 * 33 =

50 * 39 =

48 * 24 =

49 * 43 =

36 * 38 =

41 * 40 =

18 * 32 =

35 * 50 =

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