Mastering Two-Digit Subtraction with Regrouping

What is the first step in subtraction with regrouping?

• Regroup the tens into ones

• Subtract the tens

• Subtract the ones

• Add more tens

Tags

CCSS.7.NS.A.1C

Why do we need to regroup in subtraction?

• When we have more ones than tens

• When we can't subtract the smaller number from the larger one in the ones place

• To make subtraction easier

• To add more value to the tens place

Tags

CCSS.2.NBT.B.5

After regrouping 42 to subtract 25, how many tens are left?

• Two

• One

• Four

• Three

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What is the result of 12 minus 5?

• 7

• 6

• 5

• 8

Tags

CCSS.2.OA.A.1

What is the final answer to 42 minus 25?

• 15

• 21

• 17

• 19

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

In the second example, what is the first step when subtracting 63 minus 37?

• Subtract the ones

• Add more ones

• Regroup the tens into ones

• Subtract the tens

Tags

CCSS.2.NBT.B.7

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

• 10

• 11

• 12

• 13

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What is 13 minus 7?

• 6

• 4

• 5

• 7

Tags

CCSS.2.OA.A.1

After subtracting the tens in the second example, how many tens are left?

• Five

• Four

• Three

• Two

Tags

CCSS.2.NBT.B.7

What is the final answer to 63 minus 37?

• 25

• 26

• 27

• 28

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2