Mastering 2 Digit Subtraction with Regrouping

This video tutorial covers two-digit subtraction with regrouping using base ten blocks and the algorithm. It includes two examples: subtracting 51 - 27 and 43 - 15. The tutorial explains the regrouping process, demonstrating how to borrow from the tens place to solve subtraction problems efficiently.

What is the main advantage of using the algorithm for subtraction?

• It uses fewer numbers.

• It is more fun.

• It helps solve problems faster.

• It is more colorful.

How many cookies do we start with in the first example problem?

• 27

• 43

• 24

• 51

What do we do when the number on the bottom is bigger in subtraction?

• Regroup.

• Use a calculator.

• Add more numbers.

• Skip the problem.

How many tens do we have left after borrowing in the first example?

• 2

• 4

• 3

• 5

What is the result of 51 minus 27?

• 26

• 22

• 28

• 24

How many cookies do we start with in the second example problem?

• 43

• 27

• 51

• 24

What do we do when we don't have enough ones to subtract?

• Skip the problem.

• Borrow from the tens place.

• Use a calculator.

• Add more ones.

How many ones do we have after borrowing in the second example?

• 12

• 10

• 11

• 13

What is the result of 43 minus 15?

• 24

• 22

• 28

• 26

How many tens are left after borrowing in the second example?

• 4

• 5

• 3

• 2