2 Digit Subtraction with Regrouping Techniques

The video tutorial teaches two-digit subtraction with and without regrouping using base 10 blocks, represented as cookies. It begins with an introduction to the concept, followed by examples of subtraction without regrouping and with regrouping. The tutorial includes practice problems and concludes with a resource for further practice using a Boom Card deck.

What analogy is used to explain two-digit subtraction with regrouping?

• Using base 10 blocks as cookies

• Using cars and parking spaces

• Using books on a shelf

• Using stars in the sky

In the example 86 - 24, how many cookies are left after the subtraction?

• 64 cookies

• 58 cookies

• 60 cookies

• 62 cookies

How many cookies were initially available in the first example (86 - 24)?

• 24 cookies

• 100 cookies

• 86 cookies

• 62 cookies

What do you need to do if you don't have enough ones to subtract?

• Borrow from the tens

• Just give up

• Start over

• Ignore the ones

After borrowing from the tens in the example 52 - 28, how many ones are left?

• 4 ones

• 8 ones

• 2 ones

• 6 ones

What is the purpose of 'borrowing' in subtraction with regrouping?

• To make the problem easier

• To avoid subtraction

• To make sure there are enough ones to subtract

• To confuse students

What happens to the tens after borrowing in the example 52 - 28?

• No tens are left

• One ten is left

• Three tens are left

• Two tens are left

In the subtraction problem 91 - 35, how many tens are left after borrowing?

• 3 tens

• 4 tens

• 6 tens

• 5 tens

What is the final result of 91 - 35?

• 54

• 57

• 55

• 56

Why is practicing with Boom cards recommended at the end of the video?

• To learn about cookies

• To improve subtraction skills

• To learn about base 10 blocks

• To pass time