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 have been taken away.

Tags

CCSS.2.NBT.B.7

Front

What does regrouping mean in subtraction?

Back

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

Tags

CCSS.7.NS.A.1C

Front

Solve: 43 - 16 = ?

Back

27

Tags

CCSS.2.OA.A.1

Front

Solve: 59 - 39 = ?

Back

20

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 29 - 11 = ?

Back

18

Tags

CCSS.2.OA.A.1

Front

Solve: 57 - 24 = ?

Back

33

Tags

CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

Solve: 86 - 50 = ?

Back

36

Tags

CCSS.2.NBT.B.5

Front

What is the first step in subtraction with regrouping?

Back

The first step is to line up the numbers by their place values (ones, tens, etc.).

Tags

CCSS.7.NS.A.1C

Front

When do you need to regroup in subtraction?

Back

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

Tags

CCSS.2.NBT.B.7

Front

What do you do if you need to subtract 7 from 3 in the ones place?

Back

You regroup by borrowing 1 from the tens place, making the 3 into 13.

Tags

CCSS.2.NBT.B.7