Multiplying Whole Numbers

Multiplying Whole Numbers

Multiplying Using an Area Model

• Expand the factors

• Draw the columns and rows

• Multiply!

• Add the partial products

Multiple Choice

How would you expand 4,298 x 376?

• (4 + 2 + 9 + 8) x (3 + 7 + 6)

• (4,000 + 200 + 90 + 8) x (300 +70 + 6)

• (42 x 98) + (37 x 6)

Multiple Choice

What is 4,000 x 300?

• 1,200,000

• 120,000

• 12,000

• 1,200

The Distributive Property

When we write one factor as a sum and multiply the other factor by both addends, we will get the product

Multiple Select

453 x 18 is equivalent to...

• (453 x 10) + (453 x 8)

• 400(10 + 8) + 50(10 +8) + 3(10 + 8)

• (400 + 10) x (50 + 8) + 3

• (453 + 10) x (453 + 8)

Standard Algorithm

• Check

• Collar

• Egg

Multiple Choice

What is the first step in solving

717

x 62

• 2 x 7

• 2 x 1

• 60 x 7

• 60 x 1

Multiple Choice

What does it mean to "lay an egg?"

• Do three squats

• Put a 0 in the place you just multiplied the factor by

• Check off the numbers you re-grouped