Subtraction with Regrouping

Front

What is subtraction?

Back

Subtraction is the process of taking one number away from another. It shows how many are left after some are taken away.

Tags

CCSS.2.NBT.B.7

Front

What does regrouping mean in subtraction?

Back

Regrouping in subtraction means rearranging numbers to make it easier to subtract, especially when the top number is smaller than the bottom number in a column.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

Solve: 64 - 19

Back

45

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 46 - 29

Back

17

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 80 - 49

Back

31

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 90 - 56

Back

34

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 67 - 49

Back

18

Tags

CCSS.2.OA.A.1

Front

What is the first step in subtraction with regrouping?

Back

The first step is to look at the digits in each column, starting from the right.

Tags

CCSS.7.NS.A.1C

Front

When do you need to regroup?

Back

You need to regroup when the top digit in a column is smaller than the bottom digit.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

How do you regroup in subtraction?

Back

To regroup, you borrow 1 from the next left column, which adds 10 to the current column.

Tags

CCSS.7.NS.A.1C