0 as a Factor

• Zero Property of Multiplication
• The product will always be zero.

1 as a Factor

• Identity Property of Zero
• When you multiply a number and 1 the product is the number.

2 as a Factor

• Skip count by 2's
• Addition, using doubles
• The product will always be an even number.

5 as a Factor

• Skip count by 5's
• The product will always end in 5 or 0.

10 as a Factor

• Skip count by 10's
• Add a zero to the end of the other factor.
• All multiples of 10 end with zero.