Mastering Subtraction with Regrouping for 3-Digit Numbers

What is the first step in three-digit subtraction with regrouping?

• Start with the hundreds column

• Start with the tens column

• Start with the largest number

• Start with the ones column

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

In the example 573 - 249, why do we need to regroup?

• Because 3 is less than 9

• Because 7 is less than 4

• Because 5 is less than 2

• Because 3 is greater than 9

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

After regrouping, how many ones do we have in the example 573 - 249?

• 3

• 10

• 9

• 13

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What is the result of 573 - 249 after regrouping?

• 324

• 329

• 314

• 319

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

In the example 343 - 178, what do we do when we can't subtract 8 from 3 in the ones column?

• Subtract directly

• Add 10 to the ones column

• Regroup from the tens column

• Move to the hundreds column

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

How many tens do we have after regrouping in the example 343 - 178?

• 7

• 3

• 10

• 13

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What is the result of 343 - 178 after regrouping?

• 165

• 195

• 185

• 175

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

In the example 645 - 478, what do we do when we can't subtract 8 from 5 in the ones column?

• Move to the hundreds column

• Subtract directly

• Regroup from the tens column

• Add 10 to the ones column

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

After regrouping, how many ones do we have in the example 645 - 478?

• 5

• 10

• 15

• 8

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

What is the result of 645 - 478 after regrouping?

• 187

• 157

• 167

• 177

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2