Subtraction with Regrouping

Front

What is subtraction with regrouping?

Back

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

Tags

CCSS.7.NS.A.1C

Front

How do you borrow in subtraction?

Back

To borrow in subtraction, you take 1 from the next left column, decrease that digit by 1, and add 10 to the current column's digit.

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

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What is the result of 323 - 125?

Back

198

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

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What is the result of 803 - 458?

Back

345

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

How much more does Ellie weigh than Kirby if Ellie weighs 905 pounds and Kirby weighs 335 pounds?

Back

570 pounds

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CCSS.4.OA.A.3

Front

What is the result of 74 - 23?

Back

51

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CCSS.2.NBT.B.7

CCSS.3.NBT.A.2

Front

What is the result of 58 + 31?

Back

89

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CCSS.1.NBT.C.4

CCSS.2.NBT.B.5

Front

What does the term 'regrouping' mean in subtraction?

Back

Regrouping means rearranging numbers to make subtraction easier, often involving borrowing from the next column.

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 is the first step in solving a subtraction problem with regrouping?

Back

The first step is to check each column from right to left to see if you need to borrow.

Tags

CCSS.7.NS.A.1C