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

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