Exploring One-Digit by Two-Digit Multiplication Methods

Mrs. Naslund introduces unit five, lesson five, focusing on one-digit by two-digit multiplication using the numeric method, also known as the regrouping method. The lesson aims to relate the area model to the numeric method and provides step-by-step examples of multiplying numbers like 16 by 5, 9 by 4, and 7 by 2. Students are encouraged to practice this traditional method, which is useful for larger numbers, and compare it with the area method.

What are the learning targets for today's lesson?

• Learning the numeric method of multiplication

• All of the above

• Understanding the area model of multiplication

• Practicing one-digit by two-digit multiplication

Tags

CCSS.4.NBT.B.5

What is another name for the numeric method of multiplication?

• Regrouping method

• Area method

• Column method

• Traditional method

Tags

CCSS.4.NBT.B.5

In the example 16 x 5, what is the first step?

• Multiply the ones

• Add the regrouped number

• Multiply the tens

• Write the final answer

Tags

CCSS.5.NBT.B.5

What do you do after multiplying the ones in the regrouping method?

• Multiply the tens and add the regrouped number

• Divide the tens

• Write the final answer

• Subtract the ones

Tags

CCSS.5.NBT.B.5

In the example 16 x 5, what is the final answer?

• 30

• 50

• 80

• 90

Tags

CCSS.4.NBT.B.5

In the example 9 x 4, what is the first step?

• Write the final answer

• Multiply the ones

• Add the regrouped number

• Multiply the tens

Tags

CCSS.4.NBT.B.5

What is the final answer for the problem 9 x 4?

• 36

• 46

• 56

• 66

Tags

CCSS.3.OA.C.7

In the example 7 x 2, what is the first step?

• Write the final answer

• Multiply the ones

• Add the regrouped number

• Multiply the tens

Tags

CCSS.4.NBT.B.5

What is the final answer for the problem 7 x 2?

• 44

• 14

• 24

• 34

Tags

CCSS.3.OA.C.7

What should you do if you want to check your work using a different method?

• Use the area method

• Use the division method

• Use the subtraction method

• Use the addition method

Tags

CCSS.5.NBT.B.5