Double Digit Addition with Regrouping

Front

What is double digit addition?

Back

Double digit addition is the process of adding two numbers that each have two digits, such as 34 + 25.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What does regrouping mean in addition?

Back

Regrouping in addition means carrying over a value from one column to the next when the sum exceeds 9.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

Solve: 47 + 36

Back

83

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

Solve: 58 + 29

Back

87

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the first step in double digit addition?

Back

The first step is to add the digits in the ones place.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What do you do if the sum of the ones place is 10 or more?

Back

You regroup by carrying over 1 to the tens place.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

Solve: 65 + 28

Back

93

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

Solve: 74 + 19

Back

93

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the second step in double digit addition?

Back

The second step is to add the digits in the tens place, including any regrouping.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is an example of a problem that requires regrouping?

Back

An example is 58 + 37, where you regroup because 8 + 7 = 15.

Tags

CCSS.1.NBT.C.4

CCSS.2.NBT.B.5