7353-Module 3

3 x 3 = ?

Mathematical Equivalence

OFF

5 x 7 = ?

Mathematical Equivalence

ON

9 x 11 = ?

Mathematical Equivalence

ON

3 x 5 = ?

Mathematical Equivalence

ON

7 x 9 = ?

Mathematical Equivalence

ON

What do you notice about the factors? [factor x factor = product]

What do you notice about the results of multiplying two odd numbers?

• They are all even

• They are all odd

What can you conjecture about the product of two odd numbers?

Select the following whose result would be an odd number.

• 13 x 136

• 15 x 17

• 317 x 119

• 113 x 121

The product of two odd numbers will result in an odd number.

• True
• False