Abacus Lesson 31 // SUBTRACT- COMPOUND Complementary Numbers Respect to 10- ONE'S Column Video Lecture | Abacus Master Class:Become an Expert (English) - Personal Learning

lesson 31 subtraction using compound
complementary numbers in the ones column
so you're probably coming back here
feeling pretty confident saying yeah I
can handle this
my brain has stretched and it has grown
there's nothing you can throw at me
that's really going to make me feel
intimidated or weak or like I can't do
anything because I have learned how to
do the abacus one of the most feared
mathematical tools in all of his well
maybe it wasn't feared but not very many
people know how to use it because it's
hard this is hard stuff and you're
figuring it out and so you're feeling
pretty darn confident right now
so you're saying yeah bring on the
subtraction using compound complementary
numbers I have no idea of what what is
going to be but I have my guesses and I
think it's going to be pretty easy
piece of cake for me because I can
handle new things and hard things all
right let us do 13 minus 6 so set the
number 13 on your abacus so 13 minus 6
so think back to what we did using the
compound complementary numbers in
addition in the ones column and I'm
going to do just the opposite of that
okay since this is 6 the compliment to
the number 6 is 4 and fourth respect to
5 is 1 so this time I'm going to take
one away here slide that little 5 down
and take away one in the tens column 13
minus 6 is 7 now did you see the process
there see how did you see how it was
just the opposite of what we did with
addition all right let's do the next
problem
14 minus 9 so set the number 14 on your
abacus and we are going to subtract from
that the number 9 now I know you can do
this in your head piece of cake
but we're trying to just remember the
the whole reason we go through this
strange way of thinking in the abacus is
to mecca's i mechanize or make automatic
the process of calculating on the abacus
that's the power of this tools you don't
have to think count little digits in
your head or anything or even memorize
you just let you just move the numbers
you're supposed to move in the answer
appears all right so the compliment to
the number nine is 1 & 1 with respect to
5 is 4 so what I'm going to do is take
all 4 of these away add that 5 and take
that away there 14 minus 9 is 5 all
right let's do 12 minus 6 12 minus 6 hmm
all right you know this answer good the
the process goes like this
Bing Bing Bing 12 minus 6 is 6
all right let's do another one let's do
13 minus 7 13 minus 7 all right so the
compliment to the number 7 is 3 & 3
they're just like like this I take away
2 add the 5 and get rid of that okay
there it is
okay 13 minus 7 is 6 I just do a couple
more and I think you'll get it
let's do a Levin -6 11 minus 6 put the
number 11 on your abacus and we are
going to take from that the number 6
alright so the same thing the complement
of 6 is 4 & 4 with respect 5 is 1 so I
take that away slide down that 5 and
subtract that one there 11 minus 6 is 5
so what we're subtracting just get used
to that sequence it's almost like you're
memorizing a new set of complementary
numbers when it involves a 5 that the 6
automatically triggers a 1 the 7
automatically triggers a 2 and the 8
automatically triggers a 3 and you'll
recognize those all right let's try 14
minus 8 a 1 and a 4 minus 8 they
automatically triggers a 306 14 minus 8
is 6 one last one and I'll turn you
loose on this here we go
13 minus 8 1 and a 3 there's a number 13
set on our abacus and we're going to
take from that the number 8 even though
the compliment to the number 8 is 2 well
there's a 5-minute I know it this time
it's going to trigger ok here we go
13 minus 8 is 5 so the key that you're
seeing in all this in the abacus is to
really get used to and just have it in
your head when to employ the different
techniques that different with different
combinations of numbers when you see a
certain set of number you just know what
to do and your fingers just start moving
the beads and you know what to do and it
doesn't take too much thinking and the
only way to do that is just to do it a
lot the only the only way to get used to
it is just to do it a lot and you get
used to using your numbers if you want
the abacus to really be fluid for you
and so they your brain doesn't have to
do so much thinking then you just work
with it a lot it's almost like you're
you're thinking really hard a whole lot
right now so that when you use it in the
future
you don't have to think quite as much it
just becomes automatic now I don't know
about you but for me it's that way with
a lot of things in life that when you
practice really hard at something in the
beginning and let it's almost like you
do all the thinking right then so that
you don't have to do as much thinking
later on that's one of the things I like
about learning the app because it
reminds me of that principle of
practicing hard right now so that in the
future something becomes automatic and I
don't have to think about it as much
that is the power of the abacus like so
many other things in life that deal with
learning and growing and stretching
that's what it is is studying and
learning a lot right now so that in the
future it becomes automatic I love that
principle anyways go work through some
of these problems I don't think they'll
be too hard for you you'll get you'll
get this do do about ten fifteen of them
however many you want to do and come
back and let's practice comp subtraction
using compound complementary numbers in
the tens column
you