2-Digit Addition with Regrouping

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What is 2-digit addition?

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2-digit addition is the process of adding numbers that have two digits, such as 29 and 52.

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

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What does regrouping mean in addition?

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Regrouping is when you carry over a value from one column to the next in addition, usually when the sum of a column is 10 or more.

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CCSS.2.NBT.B.7

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Back

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

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Back

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

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Back

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

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Back

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

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How do you add numbers with regrouping?

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1. Add the digits in the ones place. 2. If the sum is 10 or more, carry over to the tens place.

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

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What is the ones place in a 2-digit number?

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The ones place is the rightmost digit in a 2-digit number.

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CCSS.4.NBT.A.1

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What is the tens place in a 2-digit number?

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The tens place is the left digit in a 2-digit number.

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CCSS.4.NBT.A.1