The video tutorial teaches how to mentally add 10 or 100 to a number by visualizing base 10 blocks. It begins with an introduction to the concept, followed by an explanation of place value and its significance in addition. The tutorial then provides step-by-step examples of adding 10 and 100 to numbers using base 10 blocks, emphasizing changes in the tens and hundreds places. The lesson concludes with a recap of the key points covered.

What is the main focus of this lesson?

• Subtracting numbers using base 10 blocks

• Dividing numbers using base 10 blocks

• Mentally adding 10 or 100 to a number

• Multiplying numbers using base 10 blocks

What are the components of a three-digit number?

• Hundreds, tens, and ones

• Tens, hundreds, and thousands

• Ones, tens, and thousands

• Hundreds, tens, and thousands

What does one cube represent in base 10 blocks?

• Ten

• One

• Hundred

• Thousand

When adding 10 to a number, which place value changes?

• Hundreds place

• Tens place

• Ones place

• Thousands place

In the example 279 + 10, what is the result?

• 289

• 279

• 299

• 269

What does a 'ten long' represent in base 10 blocks?

• Ten

• Thousand

• One

• Hundred

When adding 100 to a number, which place value changes?

• Tens place

• Thousands place

• Ones place

• Hundreds place

In the example 432 + 100, what is the result?

• 433

• 5320

• 432

• 532

What does a 'hundred flat' represent in base 10 blocks?

• One

• Ten

• Hundred

• Thousand

What is the key takeaway from this lesson?

• Dividing numbers using base 10 blocks

• Multiplying numbers using base 10 blocks

• Subtracting 10 or 100 using base 10 blocks

• Mentally adding 10 or 100 by visualizing base 10 blocks