Mastering Regrouping in Subtraction

What is the first step in subtraction regrouping?

• Switch the numbers

• Start with the tens

• Borrow from the neighbor

• Start with the ones

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What is the importance of the order in subtraction?

• Numbers can be switched anytime

• There's no specific reason

• It makes it easier

• It's required for borrowing

Tags

CCSS.7.NS.A.1C

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

• Start over

• Ignore the problem

• Borrow from the neighbor

• Just switch the numbers

Tags

CCSS.2.NBT.B.7

What becomes of 94 when you borrow one for subtraction?

• 14 in the ones place

• 94 with a borrowed one

• 104

• 84

Tags

CCSS.2.NBT.B.6

What is the result of 94 take away 75?

• 19

• 9

• 18

• 29

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What do you do if your immediate neighbor has nothing to borrow?

• Start with the tens

• Borrow from the next neighbor

• Give up

• Switch the numbers

Tags

CCSS.2.NBT.B.7

After borrowing from the neighbor's neighbor, what does 203 become?

• 213

• 103

• 113

• 193

Tags

CCSS.2.NBT.B.7

What is the final step after borrowing for subtraction?

• Borrow again

• Restart the problem

• Subtract as usual

• Add the numbers

Tags

CCSS.5.NBT.B.7

What is the result of 203 take away 85?

• 128

• 180

• 118

• 118

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

How many times do we borrow in the example of 203 take away 85?

• Once

• Twice

• Not at all

• Three times

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2