Subtracting Across Zeros: Key Concepts and Practice

This video tutorial covers the concept of subtraction for third graders, focusing on borrowing across zeros. It provides detailed examples of subtracting numbers like 403 - 156 and 300 - 167, demonstrating the process of borrowing and regrouping. The video concludes with a practice problem for viewers to solve, reinforcing the learned concepts.

What is the main challenge third graders face in subtraction?

• Adding large numbers

• Dividing large numbers

• Subtracting with zeros and borrowing

• Multiplying with decimals

In the example 403 - 156, what is the first step in subtraction?

• Borrow from the hundreds

• Subtract the ones directly

• Add more ones

• Ignore the zeros

After borrowing and regrouping in 403 - 156, how many tens are left?

• Nine tens

• Five tens

• Fifteen tens

• Ten tens

What is the result of 403 - 156?

• 267

• 256

• 275

• 247

In the problem 300 - 167, what must be done first due to lack of ones?

• Borrow from tens

• Borrow from hundreds

• Add more hundreds

• Subtract the hundreds

How many ones are left after subtracting 7 from 10 in the problem 300 - 167?

• One one

• Four ones

• Two ones

• Three ones

What is the final result of the subtraction 300 - 167?

• 153

• 143

• 163

• 133

In the problem 500 - 220, what is the first step to handle the lack of ones?

• Subtract the hundreds directly

• Add more tens

• Borrow from hundreds

• Borrow from tens

After regrouping in 500 - 220, how many tens are left before subtracting?

• Eight tens

• Ten tens

• Seven tens

• Nine tens

What is the final answer for the subtraction problem 500 - 220?

• 280

• 278

• 275

• 285