Mastering 2-Digit Subtraction with Regrouping

The video tutorial teaches students how to perform double digit subtraction with regrouping. It begins by setting up a subtraction problem using a place value chart. The concept of regrouping is explained as exchanging tens for ones, likened to a bank transaction. Students learn to subtract ones and tens after regrouping, with a final result of 33 - 17 equaling 16. The lesson concludes with encouragement to practice similar problems at home.

What is the first step in double digit subtraction with regrouping?

• Subtract the larger number from the smaller number

• Start with the ones

• Add the numbers together

• Start with the tens

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Why can't we subtract 7 from 3 in the ones place?

• Because we always subtract tens first

• Because 7 is larger than 3

• Because 3 is larger than 7

• Because they are in different places

Tags

CCSS.2.NBT.B.7

What do we do when we 'go to the bank' in regrouping?

• We subtract directly

• We exchange ones for tens

• We exchange tens for ones

• We add more tens

Tags

CCSS.2.NBT.B.6

After regrouping, how many ones do we have if we started with 3 ones and exchanged 1 ten for 10 ones?

• 13 ones

• 7 ones

• 10 ones

• 3 ones

Tags

CCSS.1.NBT.B.2B

CCSS.1.NBT.B.2C

Why do we set up the ones in a ten frame during regrouping?

• To make it harder to count

• To add more tens

• To make it easier to count

• To subtract directly

Tags

CCSS.1.OA.A.1

What is the result of 13 minus 7 in the ones place?

• 7

• 8

• 6

• 5

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What do we do after regrouping the ones?

• Add the tens

• Add the ones

• Subtract the tens

• Subtract the ones

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

How many tens are left after subtracting 1 ten from 2 tens?

• 1 ten

• 0 tens

• 3 tens

• 2 tens

Tags

CCSS.1.NBT.C.5

What is the final result of 33 minus 17?

• 16

• 15

• 17

• 18

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2