Subtraction with regrouping

Where do we always start subtracting from?

• The biggest place value

• The smallest place value

Tags

CCSS.3.NBT.A.2

What question do we always need to ask?

• What's for lunch?

• Does my cat really love me or does it just want food?

• Can I subtract this or do I need to regroup?

Tags

CCSS.3.NBT.A.2

What subtraction?

• Squishing 2 numbers together to get a bigger number.

• The removal of objects from a group, the numbers get smaller.

• Putting tape under your shoe to make it stickier.

Tags

CCSS.3.NBT.A.2

Do you need to regroup?

• yes

• no

Tags

CCSS.3.NBT.A.2

Do you need to regroup?

• yes

• no

Tags

CCSS.3.NBT.A.2

How many regroups do you need?

• 1

• 0

• 2

Tags

CCSS.3.NBT.A.2

How many regroups do you need?

• 1

• 0

• 2

Tags

CCSS.3.NBT.A.2

How many regroups do you need?

• 1

• 0

• 2

Tags

CCSS.3.NBT.A.2

How many regroups do you need?

• 1

• 0

• 2

Tags

CCSS.3.NBT.A.2

How many regroups do you need?

• 4

• 3

• 2

• 1 000 000

Tags

CCSS.3.NBT.A.2