Subtraction Techniques and Borrowing

The video tutorial covers triple digit subtraction with regrouping, focusing on regrouping in both the ones and tens places. It begins with an introduction to the topic and a review of subtraction rules. The instructor then demonstrates solving the equation 634 - 159, explaining each step in detail. Students are encouraged to practice with a similar problem, 762 - 97, and are given instructions for homework. The video emphasizes understanding the rules and applying them to solve subtraction problems effectively.

What is the first rule for subtraction mentioned in the video?

• If the numbers are the same, zero the game.

• If there's more on the top, no need to stop.

• If there's more on the floor, go next door.

• Always subtract the smaller number from the larger number.

What should you do if the numbers are the same?

• Subtract them directly.

• Zero the game.

• Go next door.

• Add them together.

In the equation 634 - 159, what do you do when you see 4 - 9?

• Subtract directly.

• Add 10 to the 4.

• Go next door and borrow.

• Multiply the numbers.

After borrowing, what does the 4 become in the equation 634 - 159?

• 9

• 5

• 14

• 10

What is the result of 14 - 9 in the equation 634 - 159?

• 5

• 6

• 4

• 3

In the equation 762 - 97, what do you do when you see 2 - 7?

• Multiply the numbers.

• Go next door and borrow.

• Add 10 to the 2.

• Subtract directly.

After borrowing, what does the 2 become in the equation 762 - 97?

• 10

• 12

• 5

• 9

What is the result of 12 - 7 in the equation 762 - 97?

• 5

• 4

• 6

• 3

In the equation 762 - 97, what do you do when you see 50 - 90?

• Multiply the numbers.

• Subtract directly.

• Add 10 to the 50.

• Go next door and borrow.

What is the final result of the equation 762 - 97?

• 645

• 655

• 675

• 665