To multiply by a negative, change the sign and multiply the size.
To multiply by a positive multiply the size. 
 Multiply.
1st:  Use a blank rectangular sheet of paper to separate the storage
region from the display area and to create a border for the rectangular area created. 
2nd:  Represent one factor (usually the fist) vertically in the storage
on the left edge of the display area. The factor acts as a measure of the length of the side. 
3rd:  Represent the other factor horizontally in the storage on the top edge of the display area. The factor acts as a measure of the length of the side. 
4th:  Multiply a top tile by a side tile filling in the corresponding region
of the display area with the required tile. These tiles represent the product and the area of the region. 
5th:  The product is produced in the display area.

TwoDigit Multiplication
ex. 9. Multiply.

In the basic set of Term Tiles, a 10tile is not included. If it were, this is what the
multiplication fo 2 times 13 would look like.
Twodigit multiplication is included here because it foreshadows algebraic
multiplication involving binomials and other polynomials. 
ex. 10. Multiply.

In the basic set of Term Tiles, a 10tile, 10tile, 100tile and 100tile
do not exist. If these tiles were included this is what the representaion and product
would look like. It is NOT necessary to use tiles  a graphic is sufficient. 
To divide by a negative, change the sign and divided as usual.
To divide by a positive, divide as usual. 
 Divide.
1st:  Use a blank rectangular sheet of paper to separate the storage
region from the display area and to create a border for the rectangular area created. 
2nd:  Represent the divisor vertically in storage on the left edge
of the display area. 
3rd:  Begin with the terms (tiles) of highest degree placing tiles in
the upper left corner first. 
4th:  Represent the dividend in rows in the display area matching
the divisor. The remainder will, of course, be extra. 
5th:  Represent the appropriate quotient horizontally in the storage
area as dictated by the dividend. 
6th:  Read the quotient and the remainder.

