Mark Symmonds – Chatsworth International School, Singapore
Just like when we
count, start from
the left.
1, 2, 3, 4, 5, 6…
As we are looking for 3 multiplied
by 9 we count across to our 3rd
finger and move it down.
2
1
3
3x9=
Marker Finger
1x9=9
2 x 9 = 18
3 x 9 = 27
4 x 9 = 36
5 x 9 = 45
7x9=
Marker Finger
1x9=9
2 x 9 = 18
3 x 9 = 27
4 x 9 = 36
5 x 9 = 45
6 x 9 = 54
7 x 9 = 63
8 x 9 = 72
9 x 9 = 81
10 x 9 = 90
9x9=
1x9=9
2 x 9 = 18
3 x 9 = 27
4 x 9 = 36
5 x 9 = 45
6 x 9 = 54
7 x 9 = 63
8 x 9 = 72
9 x 9 = 81
10 x 9 = 90
Marker Finger
1x9=9
2 x 9 = 18
3 x 9 = 27
4 x 9 = 36
5 x 9 = 45
6 x 9 = 54
7 x 9 = 63
8 x 9 = 72
9 x 9 = 81
10 x 9 = 90
11 x 9 = 99
12 x 9 = 108
The tens digit is always
one less than the
number you are
dividing!
Remember there
are no tens digit
in 1 x 9 as the
answer is 0 tens
and 9 units!
This pattern only
works up until
10 x 9
9 added to nothing
equals 9
If you add both the
digits of the answer
together they will
always equal 9.
So if we take 7 x 9…
The tens column in
the answer is
always one less
than the one you
are multiplying.
We know the answer will start with?
6
And the two digits added together make
nine so 6 and what make 9?
3
So we know that the answer is 63.
so…
1980
so…
so…
5445
so…
so…
12177
so…