Mastering 2-Digit Subtraction Techniques

This video tutorial teaches how to identify two-digit subtraction problems that require regrouping. It introduces a rhyme to help remember when to regroup and provides examples and practice problems to reinforce the concept. The video emphasizes understanding the difference between numbers on the top and bottom to determine if regrouping is necessary.

What is the main topic of the video?

• Learning addition with carrying

• Understanding subtraction regrouping

• Multiplication strategies

• Division techniques

Tags

CCSS.5.NBT.B.6

CCSS.6.NS.B.2

What indicates that you don't need to regroup in subtraction?

• When the top number is smaller

• When the bottom number is larger

• When there's more on the top

• When you have zero

Tags

CCSS.2.NBT.B.5

What does the rhyme 'if there's more on the floor, go next door and get 10 more' help you remember?

• When to add

• When to divide

• When to regroup in subtraction

• When to multiply

Tags

CCSS.2.NBT.B.7

How do you solve 98 minus 51 according to the video?

• By borrowing from the tens place

• Without regrouping

• By regrouping

• By adding instead of subtracting

According to the video, what do you do if there's more on the top?

• Add the numbers instead

• Go next door and get 10 more

• Subtract like normal

• Stop and regroup

Tags

CCSS.2.NBT.B.7

What analogy is used to explain regrouping?

• Borrowing books

• Sharing cookies

• Collecting stamps

• Distributing candies

Tags

CCSS.2.NBT.B.6

In the cookie analogy, what does going 'next door to get 10 more' represent?

• Adding ten to the ones place

• Borrowing ten from the tens place

• Multiplying the ones place by ten

• Dividing the tens place by ten

Tags

CCSS.1.NBT.C.5

What is the outcome of 94 minus 56 as explained in the video?

• 58

• 48

• 68

• 38

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What does the video suggest to do when the ones place in the subtrahend is larger than the ones place in the minuend?

• Multiply the ones place by ten

• Regroup by borrowing from the tens place

• Ignore the ones place

• Just subtract the tens place

Tags

CCSS.2.NBT.B.7

What happens when you have the same number of cookies as friends?

• You give away all cookies and have zero left

• You need to borrow cookies

• You have leftovers

• You don't need to regroup

Tags

CCSS.2.OA.C.4