#38 រៀនក្បាច់គិតលេខជាភាសាខ្មែរ //Learning Abacus//How to use multiplication formulas
#38 រៀនក្បាច់គិតលេខជាភាសាខ្មែរ //Learning Abacus//How to use multiplication formulas This lesson will show you the formulas of multiplication. So for more detail would you please join with me.

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#40 រៀនក្បាច់គិតលេខជាភាសាខ្មែរ //Learning Abacus//How to divide 4 with 2 digits

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