Abacus Mental Arithmetic Ep.11 - Combo rules : +9,+8,+7,+6
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Abacus Mental Arithmetic Ep.10 - 5's rules : -4,-3,-2,-1
Abacus Mental Arithmetic Ep.9 - 5's rules : +4,+3,+2,+1
Abacus Mental Arithmetic Ep.6 - 10's rules : +5,+4,+3,+2,+1 (中文 sub)
Abacus Mental Arithmetic Ep.4 - Adding and subtracting numbers on the Abacus without rules (中文 sub)
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Abacus Mental Arithmetic Ep.8 - Finger Abacus &10's rules : -5,-4,-3,-2,-1
Abacus English Tutorial episode 11 Technique No. 7 addiction and subtraction
Abacus Mental Arithmetic Ep.5 - 10's rules : +9,+8,+7,+6 (中文 sub)
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Abacus Mental Arithmetic Ep.3 - How to clear your abacus beads to a "0" position ? (中文 sub)
Abacus Mental Arithmetic Ep.12 - Combo rules : -9,-8,-7,-6
Abacus Add and Subtract Nepali Tutorial Episode 11
Abacus add and subtract Hindi Tutorial Episode 11
Abacus Mental Arithmetic Ep.13 - Review Common Rules
Hand Abacus English Tutorial Addition of subtraction Technique no. 11 Episode15 #education #abacus
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