Mastering Regrouping in 2-Digit Subtraction

The video tutorial explains the concept of regrouping in subtraction using two examples: 34 minus 16 and 45 minus 28. It demonstrates how to handle cases where the smaller number cannot be subtracted from the larger number by regrouping tens into ones. The tutorial provides a clear, step-by-step guide to solving these subtraction problems.

What is the first step in the subtraction process when you cannot directly subtract the ones?

• Ignore the ones

• Borrow from the hundreds

• Regroup one ten into ten ones

• Subtract the tens first

After regrouping, how many ones would you have if you start with four ones and borrow one ten?

• Ten ones

• Five ones

• Fourteen ones

• Eight ones

What is the result of 34 minus 16?

• 20

• 16

• 22

• 18

In the example of 45 minus 28, what do you do when you cannot subtract eight from five?

• Subtract without regrouping

• Add more tens

• None of the above

• Regroup one ten into ten ones

How many ones are left after subtracting eight from fifteen (after regrouping)?

• Seven ones

• Eight ones

• Nine ones

• Ten ones

What is the final result of subtracting 28 from 45?

• 15

• 17

• 19

• 21