2 Digit Addition

Front

What is 2 Digit Addition?

Back

2 Digit Addition is the process of adding two numbers that each have two digits, such as 23 + 45.

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the sum of 23 and 45?

Back

The sum of 23 and 45 is 68.

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What do we call the result of an addition problem?

Back

The result of an addition problem is called the sum.

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CCSS.6.EE.A.1

Front

What is the first step in adding two 2-digit numbers?

Back

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

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

If you add 10 to a number, what happens to the tens place?

Back

The tens place increases by 1.

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CCSS.1.NBT.C.5

Front

What is 34 + 12?

Back

34 + 12 = 46.

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CCSS.2.NBT.B.5

Front

What is carrying in addition?

Back

Carrying is when the sum of the digits in a column is 10 or more, and you move 1 to the next column.

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is 57 + 36?

Back

57 + 36 = 93.

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What is the place value of the digit 5 in the number 58?

Back

The place value of the digit 5 in 58 is 50.

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CCSS.4.NBT.A.1

Front

What is 21 + 19?

Back

21 + 19 = 40.

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CCSS.2.NBT.B.5