Exploring Regrouping in Subtraction

Where should you always begin the subtraction process?

• From any position

• From the far right

• From the middle

• From the left

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What should you do when the number on top is smaller than the number below?

• Use the regrouping method

• Subtract directly

• Ignore the difference

• Add 10 to the bottom number

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What is the first step in the regrouping process?

• Subtract the bottom number from the top number

• Move to the next column

• Add 10 to the bottom number

• Cross out the top left number and reduce it by one

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

After crossing out the top left number, what should you do next?

• Cross out the bottom number

• Move to the next column

• Subtract the bottom number

• Add 10 to the original number

Tags

CCSS.1.NBT.C.5

What should you do after adding 10 to the original number?

• Reduce the top number by one

• Cross out the bottom number

• Move to the next column

• Subtract the bottom number

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

What is the final step in the regrouping process?

• Subtract the bottom number

• Move to the next column

• Reduce the crossed number by one

• Add 10 to the bottom number

Tags

CCSS.2.NBT.B.7

What should you do after reducing the crossed number by one?

• Place it on top

• Subtract the bottom number

• Move to the next column

• Add 10 to the bottom number

Tags

CCSS.2.NBT.B.7