Review for You: Subtraction

The video tutorial explains the standard algorithm for solving subtraction problems, starting with basic examples and progressing to more complex cases involving regrouping and numbers with zeros. It covers aligning numbers vertically, subtracting digits, and handling cases where regrouping is necessary. The tutorial also demonstrates subtraction with numbers in the hundreds and zeros, emphasizing the importance of understanding place values and regrouping techniques.

What is the first step in using the standard algorithm for subtraction?

• Write the numbers horizontally

• Align the numbers vertically

• Subtract the hundreds place first

• Add the numbers together

When should you regroup in a subtraction problem?

• When the number being subtracted is smaller

• When the number being subtracted is larger

• When both numbers are equal

• When subtracting from zero

In the example of subtracting 31 from 18, what is the result after regrouping?

• 3

• 33

• 23

• 13

How do you handle subtraction when the tens place is zero?

• Regroup from the hundreds place

• Skip the tens place

• Add ten to the tens place

• Subtract directly

What is the result of subtracting 4 from 10 after regrouping?

• 6

• 10

• 4

• 8