Break Apart Strategy in Subtraction

The video tutorial introduces second-grade students to the concept of subtracting two-digit numbers using various strategies. The focus is on the 'break apart' strategy, which involves breaking down a subtraction problem into smaller, manageable parts. The teacher provides step-by-step examples, such as 52 - 16, 73 - 25, and 56 - 33, to demonstrate the strategy. The tutorial emphasizes the importance of finding a strategy that works best for each student and encourages them to practice and add this new strategy to their mathematical toolbox.

What is the main focus of the video tutorial?

• Addition of two-digit numbers

• Subtraction of two-digit numbers

• Multiplication of two-digit numbers

• Division of two-digit numbers

Why is it important to have different strategies for solving math problems?

• To find the strategy that works best for you

• To confuse other mathematicians

• To make math problems more difficult

• To avoid solving math problems

What is the break apart strategy?

• Solving the problem in one step

• Breaking a problem into smaller, manageable parts

• Ignoring the problem

• Combining numbers into larger ones

In the break apart strategy, what is the first step when solving 52 - 16?

• Break down the number 16

• Multiply 52 by 16

• Break down the number 52

• Add 16 to 52

When using the break apart strategy, why do we break down the number 16 in the problem 52 - 16?

• To simplify the subtraction process

• To make the problem more complex

• To avoid subtraction

• Because 16 is larger than 52

What is the result of 52 - 16 using the break apart strategy?

• 30

• 40

• 42

• 36

In the problem 73 - 25, what is the first step in the break apart strategy?

• Multiply 73 by 25

• Break down the number 25

• Break down the number 73

• Add 25 to 73

What is the result of 73 - 25 using the break apart strategy?

• 48

• 53

• 50

• 45

In the problem 56 - 33, why is less breaking apart needed?

• Because 33 is larger than 56

• Because the ones digit in 56 is larger than in 33

• Because 56 is a smaller number

• Because subtraction is not needed

What is the result of 56 - 33 using the break apart strategy?

• 23

• 43

• 33

• 53