Multi-Digit Multiplication Lesson

What did the previous video teach about?

• Addition of multi-digit numbers

• Basics of multi-digit multiplication

• Division of multi-digit numbers

• Subtraction of multi-digit numbers

Tags

CCSS.5.NBT.B.5

What is the first step in multiplying a multi-digit number by a one-digit number?

• Subtract the digits

• Divide the digits

• Multiply the bottom digit by each top digit

• Add the digits together

Tags

CCSS.4.NBT.B.5

When multiplying a multi-digit number by another multi-digit number, what do you do with the second digit of the bottom number?

• Add it to the top number

• Multiply it by each top digit

• Subtract it from the top number

• Ignore it completely

Tags

CCSS.4.NBT.B.5

In the example, what is the first multiplication step for 324 × 46?

• 6 × 3

• 4 × 3

• 6 × 4

• 6 × 2

Tags

CCSS.4.NBT.B.5

What do you do with the digits you carry over during multiplication?

• Multiply them by the next digit

• Subtract them from the next multiplication step

• Add them to the next multiplication step

• Ignore them

Tags

CCSS.4.NBT.B.5

Why do we put a zero in the first spot of the second answer line?

• To make the answer smaller

• To make the answer 10 times bigger

• To make the answer 100 times bigger

• To make the answer 1000 times bigger

Tags

CCSS.5.NBT.A.2

What is the value of the second digit in the bottom number 46?

• 40

• 6

• 60

• 4

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Why do we cross out the digits carried from the first answer line?

• To multiply them again

• To subtract them later

• To avoid adding them to the second answer line

• To reuse them

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What is the result of 4 times 4 in the second set of steps?

• 14

• 18

• 12

• 16

Tags

CCSS.3.OA.A.1

What do you do with the carried digit in the second set of steps?

• Multiply it by the next digit

• Ignore it

• Add it to the next multiplication step

• Subtract it from the next multiplication step

Tags

CCSS.4.NBT.B.5