Adding Multi-Digit Whole Numbers Using Partial Sums

This video tutorial teaches how to add multi-digit whole numbers using expanded form and partial sums. It begins with an introduction to expanded form and the importance of place value. The tutorial then provides a detailed example of adding 45,238 and 35,987 using expanded form, followed by a second example using mental math to add 32,256 and 25,478. The lesson emphasizes understanding place value and using partial sums for efficient addition.

What is the value of the digit '2' in the number 45,238 when expressed in expanded form?

• 200

• 2000

• 20

• 20000

Which of the following is the correct expanded form of 35,987?

• 30,000 + 5,000 + 900 + 80 + 7

• 3,000 + 500 + 90 + 8 + 7

• 30,000 + 500 + 90 + 8 + 7

• 3,000 + 5,000 + 900 + 80 + 7

When adding 45,238 and 35,987 using expanded form, what is the sum of the thousands place values?

• 5,000

• 10,000

• 15,000

• 20,000

In the example of adding 32,256 and 25,478 using mental math, what is the sum of the hundreds place values?

• 800

• 600

• 500

• 700

What is the final result of adding 32,256 and 25,478 using mental math and partial sums?

• 56,734

• 59,734

• 58,734

• 57,734