Understanding the Minus One Strategy

What is the main advantage of using the minus one strategy in subtraction?

• It eliminates the need for regrouping.

• It makes the numbers larger.

• It only works for addition problems.

• It adds an extra step to the process.

In the example of 84 minus 37, why was the minus one strategy not helpful?

• It only works for even numbers.

• The numbers became too small.

• Regrouping was still necessary.

• It made the subtraction more complex.

What should students do after identifying problems where the minus one strategy is helpful?

• Write a summary of the video.

• Create new subtraction problems.

• Type the problems in the provided boxes.

• Ignore the problems.

What common feature should students look for in problems where the minus one strategy is helpful?

• The numbers are both even.

• The subtraction results in a negative number.

• The numbers are both odd.

• The top number has a zero in the ones place.

What is the final task for students after completing the investigation?

• Create a new video tutorial.

• Solve additional subtraction problems.

• Summarize their findings on the slide.

• Write a report on the history of subtraction.