Multiplication by Multi-Digit Numbers

This lesson teaches how to multiply two three-digit whole numbers using the standard method. It begins with arranging the numbers in columns, then proceeds to multiply each digit of the bottom number by the top number, starting from the ones digit. The process involves writing results in appropriate columns and using placeholders. Finally, the products are added to get the final answer, demonstrating the complete multiplication process.

What is the first step in setting up the multiplication of two three-digit numbers?

• Draw a line below the numbers

• Arrange the digits into columns

• Write the multiplication symbol

• Start multiplying the digits

When multiplying the ones digit of the bottom factor, where should the results be written?

• Starting from the ones column

• In a new line

• In the hundreds column

• In the tens column

What should be done with the carry-over number during multiplication?

• Add it to the next multiplication step

• Ignore it

• Subtract it from the next digit

• Write it in the answer directly

How many rows of results will there be when multiplying a three-digit number by another three-digit number?

• Two

• Four

• One

• Three

What is the final step in calculating the product of two multi-digit numbers?

• Draw a line below the answer

• Write the multiplication symbol

• Add up the rows of results

• Multiply the last digit