Mastering Three-Digit Addition with Base Ten Blocks

The video tutorial demonstrates how to model the addition of three-digit whole numbers using base ten blocks. It provides two examples: adding 254 and 249, and adding 342 and 389. The tutorial explains the process of adding ones, tens, and hundreds, and how to handle exchanges when sums exceed ten. The use of base ten blocks helps visualize the addition process and verify the results.

What is the first step in adding 254 and 249 using base ten blocks?

• Adding the tens place value

• Adding the hundreds place value

• Performing an exchange

• Adding the ones place value

How many one-blocks do we have when adding 4 and 9?

• 12

• 11

• 13

• 10

What do we do when the sum of the ones place value is 10 or more?

• Subtract the extra value

• Ignore the extra value

• Perform an exchange for a ten-block

• Add it directly to the tens place value

What is the sum of the tens place value in the first example?

• 11

• 9

• 8

• 10

What do we do when the sum of the tens place value is 10 or more?

• Perform an exchange for a one-hundred block

• Add it directly to the hundreds place value

• Ignore the extra value

• Subtract the extra value

What is the final sum of 254 and 249?

• 503

• 504

• 505

• 506

In the second example, what is the sum of the ones place value when adding 9 and 2?

• 10

• 11

• 12

• 13

What is the sum of the tens place value in the second example?

• 12

• 13

• 14

• 15

What is the sum of the hundreds place value in the second example?

• 9

• 6

• 7

• 8

What is the final sum of 342 and 389?

• 733

• 732

• 731

• 730