Multiplying Multi-Digit Numbers

This video tutorial teaches how to multiply multi-digit numbers using the standard algorithm. It begins with an introduction to multiplication and a review of basic concepts like products and powers of ten. The video addresses common mistakes students make, such as misunderstanding place value. It provides detailed examples of multiplying 512 by 46 and 405 by 57, demonstrating each step of the process. The lesson concludes with a summary of the key points covered.

What is the result called when two numbers are multiplied together?

• Quotient

• Difference

• Sum

• Product

If you multiply a number by 100, how many times larger does it become?

• 1,000 times

• 10 times

• 1 time

• 100 times

What is a common mistake students make when multiplying multi-digit numbers?

• Multiplying by zero

• Using a calculator

• Ignoring the place value

• Forgetting to add

When multiplying 512 by 46, what is the first step in the standard algorithm?

• Subtract the numbers

• Line up the numbers vertically

• Add the numbers

• Multiply by 40

In the multiplication of 512 by 46, what is the value of 4 in the tens place?

• 40

• 4000

• 400

• 4

What is the final product of multiplying 512 by 46?

• 23,052

• 2,352

• 20,480

• 23,520

When multiplying 405 by 57, what is the first digit you multiply by?

• 0

• 5

• 4

• 7

In the multiplication of 405 by 57, what is the value of 5 in the tens place?

• 50

• 5

• 5000

• 500

What is the final product of multiplying 405 by 57?

• 20,250

• 23,085

• 28,350

• 2,835

What method did you learn in this lesson for multiplying multi-digit numbers?

• Mental math

• Estimation

• Standard algorithm

• Long division