Multiplying Multidigit Numbers

Vocabulary

Multiply: a mathematical operation where a number is added to itself a certain number of times

Factor: a whole number that is multiplied to get a product

Product: the result of multiplying two or more numbers (or factors).

Poll

When you multiplied multi-digit whole numbers in the past, which method did you prefer?

• box method

• lattice method

• standard algorithm

• another method

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​Watch the Video Example for Multiplying using the Standard Algorithm​

Multiple Choice

Which numbers do I multiply first?

• 6 x 2

• 6 x 8

Multiple Choice

Which numbers do I multiply next?

• 6 x 2

• 6 x 8

Multiple Choice

Why do we need to add a zero to the second line?

• I like the way it looks.

• It shows that we are starting to multiply in the tens place.

• You can add a zero anywhere you want.

Multiple Choice

Once we multiply all of our digits, what is the final step?

• Subtract

• Add

• Multiply

• Divide

Multiple Select

There are 365 days in a year and Lisa drives 8 miles a day to get to work. How many miles does she drive in a year if she works every day?

• 9,220 days

• 3,920 days

• 2,920 days

• 2,820 days

Fill in the Blanks

At the mall, the parking lot has 38 rows. Each row can hold 56 cars. How many cars can park at the mall without running out of spots?

Fill in the Blanks

Jessica is planning her wedding and is working on a budget. If she is inviting 165 people, and food costs $23 per person, how much will she spend on food?

Fill in the Blanks

Ben has 125 comic books that he is trying to sell. If each one sells for $22, how much money will he make?

Multiple Choice

Each day LeBron James spends 45 minutes on the treadmill. How many minutes will Lebron spend on the treadmill in a year?

(HINT: 1 year = 365 days)

• 15,425 minutes

• 16,125 minutes

• 16,225 minutes

• 16,425 minutes

• I got drip

Multiple Choice

John has just 5 days to ship his company’s latest video games to a department store. He has 9 boxes to mail. Each box holds 12 videos. How many video games is John shipping to the department store?

• 21

• 26

• 108

• 109

Multiple Choice

A pizza place sold 252 pizzas on Friday and 567 pizza on Saturday. If the pizzas cost $14 on Friday and $10 on Saturday, how much money did the pizza place make on Friday and Saturday combined?

• $1,827

• $3,087

• $9,198

• $10,458

Poll

I am able to solve 2 digit multiplication problems with the standard algorithm method without help.

• Yes

• Not Yet