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Using complimentary numbers makes carry-over operations easier.
eg - If I have 7+8, since 2 is the complimentary number (the difference between the number and 10) I can subtract 2 from the 7 and carry the 1.
The3rickZann 1 year ago
Where are the heavenly beads? |:
RawrTheWorldGoesBOOM 1 year ago
wheres the rest of the beads
TheWaldorock 1 year ago 7
What type of abacus is this?
jeffsuzuki1 1 year ago 6
tanks
mohammedkhaledar 1 year ago
Sorry , but I find this video very difficult to understand the way you are teaching the abacus. No disrespect just difficult for me. without actual abacus beads.
thenitap 1 year ago 4
Sorry , but I find this video very difficult to understand the way you are teaching the abacus
thenitap 1 year ago 4
this is normal counting nothing special
pstalman 1 year ago 4
IDIOTS!
MsGenius22 1 year ago
@MsGenius22 Thanks!
MuchoMath 1 year ago
@MsGenius22 Thanks for your comment MsGenius22!
MuchoMath 1 year ago
What happen to the ASL part. Thank you
horstmanjeff 3 years ago
hortsmanjeff, I plan to work ASL interpreters this fall. The plan is to have all videos closed captioned with many to include ASL interpreters. It is simply a matter of time and funding.
MuchoMath 3 years ago
Hey Guys, where do I find the subtraction video? Excellent work...it finally made sense.
Arawak5 4 years ago
Arawak5: The entire video that includes subtraction problems with borrowing is not available yet. It will be up at the end of the month. By the way, the instructor and the student are both played by myself.
MuchoMath 4 years ago