Exploring Integer Multiplication with Tiles

Mrs. Angel introduces integer properties of multiplication and division, using tiles to model multiplication. She explains how to represent multiplication with addition and provides examples involving negative integers. The lesson covers the concept of the opposite of integer groups and concludes with practice problems to reinforce learning.

What symbol is used to represent a positive integer in the lesson?

• A zero

• A multiplication sign

• A minus sign

• A plus sign

How many groups of positive 3 are created in the first example?

• 5

• 4

• 3

• 2

What is the total when you add four groups of positive 3?

• 12

• 9

• 6

• 15

In the example with three groups of 4 minus 1, what is the first step to represent it with tiles?

• Change to subtracting a negative

• Change to adding a positive

• Change to subtracting a positive

• Change to adding a negative

What is the total when you add three groups of positive 4 and negative 1?

• 12

• 15

• 9

• 6

When the negative sign is outside the parentheses, what does it indicate?

• Multiplication

• Addition

• Taking the opposite

• Division

What is the opposite of four groups of positive 3?

• Four groups of positive 3

• Four groups of negative 3

• Three groups of negative 4

• Three groups of positive 4

In the practice problem, what is the result of six groups of negative 2?

• -12

• -10

• -8

• -6

What is the result of five groups of positive 3 when taking the opposite?

• -15

• 15

• -10

• 10

What is the total when you add four groups of negative 1 and positive 2?

• 2

• 6

• 4

• 0