Subtraction with Regrouping

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What is subtraction with regrouping?

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Subtraction with regrouping is a method used to subtract numbers when the top digit is smaller than the bottom digit in any column, requiring us to borrow from the next column.

Tags

CCSS.7.NS.A.1C

Front

What does it mean to 'regroup' in subtraction?

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Regrouping in subtraction means to borrow from the next higher place value when the digit in the current place value is smaller than the digit we are subtracting.

Tags

CCSS.7.NS.A.1C

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276

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

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25

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CCSS.2.NBT.B.7

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218

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CCSS.2.NBT.B.7

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If I have 134 cookies and my sister has 78 cookies, how many more cookies do I have?

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56

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

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109

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

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What is the first step in subtraction with regrouping?

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

Tags

CCSS.7.NS.A.1C

Front

When do you need to borrow in subtraction?

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

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

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23

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CCSS.2.NBT.B.7

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