Mastering Multiplication of 2-Digit Numbers

This video tutorial for fifth graders covers lesson 1.7 on multiplying two-digit numbers. It begins with an introduction to the essential question of how to multiply two-digit numbers, followed by detailed, step-by-step examples of multiplying 63 by 29, 92 by 68, and 78 by 71. The lesson also includes real-world problem-solving scenarios, such as calculating the total number of cans in boxes of dog food and determining the total fees paid by drivers in a car rally. The video concludes with homework instructions and a request for students to self-assess their understanding.

What is the first step in multiplying two-digit numbers?

• Estimate the answer

• Multiply by the ones

• Multiply by the tens

• Add the partial products

Tags

CCSS.4.NBT.B.5

If you estimate 63 x 29 by rounding to the nearest tens, what is the estimated product?

• 1700

• 2000

• 1900

• 1800

Tags

CCSS.4.NBT.B.5

What is the exact product of 92 x 68?

• 6256

• 6356

• 6456

• 6556

Tags

CCSS.4.NBT.B.5

When multiplying 78 by 71, what is the estimated product?

• 5700

• 5400

• 5500

• 5600

Tags

CCSS.4.NBT.B.5

What is the exact product of 78 x 71?

• 5638

• 5738

• 5538

• 5438

Tags

CCSS.4.NBT.B.5

What is the estimated product of 612 x 87?

• 56000

• 53000

• 54000

• 55000

Tags

CCSS.4.NBT.B.5

What is the exact product of 612 x 87?

• 53244

• 54244

• 55244

• 56244

Tags

CCSS.4.NBT.B.5

How many cans of dog food did the company ship if they shipped 48 boxes with 24 cans each?

• 1352

• 1252

• 1152

• 1052

Tags

CCSS.5.NBT.B.5

How much money did the drivers pay in total if 135 cars participated in a rally with a $25 fee each?

• 3575

• 3375

• 3475

• 3275

Tags

CCSS.5.NBT.B.5

What is the second step in multiplying two-digit numbers?

• Multiply by the tens

• Estimate the answer

• Multiply by the ones

• Add the partial products

Tags

CCSS.4.NBT.B.5