Mastering 2-Digit Multiplication Techniques

The video tutorial covers the multiplication of two-digit numbers, starting with an example of multiplying 576 by 28. It emphasizes the importance of placing zeros correctly when multiplying by multiples of ten. The tutorial includes a real-world example involving a cat's running speed to demonstrate estimation in multiplication. Further examples include multiplying 165 by 31 and 32 by 13, with a focus on checking the reasonableness of answers through estimation. The video concludes with a summary of key points and encourages viewers to practice independently.

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

• Subtract the numbers

• Multiply the tens place

• Multiply the units place

• Add the numbers

Tags

CCSS.4.NBT.B.5

When multiplying 576 by 28, what is the result of 6 times 8?

• 63

• 48

• 56

• 46

Tags

CCSS.4.NBT.B.5

Why do we add a zero when multiplying by 20?

• To simplify the problem

• To avoid mistakes

• To account for the tens place

• To make the calculation easier

Tags

CCSS.4.NBT.B.5

How far can a domestic cat run in 12 seconds if it runs 44 feet per second?

• 440 feet

• 132 feet

• 88 feet

• 528 feet

Tags

CCSS.6.RP.A.3B

What is the purpose of estimating before multiplying?

• To avoid calculations

• To make the problem harder

• To check for mistakes

• To get the exact answer

Tags

CCSS.4.NBT.B.5

What is the estimated product of 165 and 31?

• 7,000

• 4,000

• 6,000

• 5,000

Tags

CCSS.4.NBT.B.5

What is the actual product of 165 and 31?

• 7,115

• 5,115

• 6,115

• 4,115

Tags

CCSS.4.NBT.B.5

What is the first step in multiplying 32 by 13?

• Subtract the numbers

• Multiply the tens place

• Add the numbers

• Estimate the product

Tags

CCSS.4.NBT.B.5

What is the estimated product of 32 and 13?

• 300

• 400

• 500

• 600

Tags

CCSS.4.NBT.B.5

What is the actual product of 32 and 13?

• 416

• 326

• 516

• 426

Tags

CCSS.4.NBT.B.5