Two Digit by One Digit Multiplication

Front

What is the standard algorithm for multiplication?

Back

The standard algorithm for multiplication involves multiplying the digits of the numbers starting from the rightmost digit, carrying over any values as needed, and then adding the results together.

Tags

CCSS.4.NBT.B.5

Front

How do you multiply a two-digit number by a one-digit number using the standard algorithm?

Back

To multiply a two-digit number by a one-digit number, multiply the one-digit number by each digit of the two-digit number separately, starting from the rightmost digit, and then add the results together, taking care of any carries.

Tags

CCSS.4.NBT.B.5

Front

What is the product of 51 and 4 using the standard algorithm?

Back

The product of 51 and 4 is 204.

Tags

CCSS.4.NBT.B.5

Front

What is the product of 72 and 3 using the standard algorithm?

Back

The product of 72 and 3 is 216.

Tags

CCSS.4.NBT.B.5

Front

What is the product of 43 and 3 using the standard algorithm?

Back

The product of 43 and 3 is 129.

Tags

CCSS.4.NBT.B.5

Front

What is the product of 61 and 6 using the standard algorithm?

Back

The product of 61 and 6 is 366.

Tags

CCSS.4.NBT.B.5

Front

What is the product of 71 and 9 using the standard algorithm?

Back

The product of 71 and 9 is 639.

Tags

CCSS.4.NBT.B.5

Front

What does 'carrying over' mean in multiplication?

Back

'Carrying over' in multiplication refers to the process of transferring a value from one column to the next when the product of a digit exceeds 9.

Tags

CCSS.4.NBT.B.5

Front

Why is it important to align numbers correctly in multiplication?

Back

Aligning numbers correctly ensures that each digit is multiplied by the correct place value, which is essential for obtaining the correct product.

Tags

CCSS.4.NBT.B.5

Front

What is the first step in the standard algorithm for multiplication?

Back

The first step is to multiply the rightmost digit of the bottom number by the rightmost digit of the top number.

Tags

CCSS.4.NBT.B.5