METODORF.COM
Interactive Portal-Book of Self-Development Methods

Arithmetic ability: Level One: Mental subtraction of two-digit numbers.

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75 - 29 =

99 - 65 =

27 - 17 =

96 - 41 =

98 - 76 =

97 - 54 =

60 - 56 =

51 - 23 =

72 - 59 =

84 - 13 =

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metodorf.com



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