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Regrouping in subtraction means that if you can't subtract because the digit on the bottom has a greater value than the digit on the top (such as 3-6), you have to "regroup" and subtract on from the top digit to the left of the digits your working with and then add a ten to the top digit your working with. Finally, you subtract. (645-9=630+15-9) Hope that makes sense!

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14y ago

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To regroup means to rearrange groups in place value to carry out an operation. We use regrouping in subtraction, when digits in the minuend are smaller than the digits in the same place in the subtrahend. Here's how we regroup hundred and tens to subtract 182 from 427.


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No, regroup does not mean to add. In mathematics, regrouping typically refers to rearranging or reorganizing numbers, particularly in operations like subtraction or addition, to make calculations easier. For example, in addition, regrouping can involve carrying over values from one column to another. Thus, while it may involve addition, regrouping itself is a broader concept related to rearranging numbers.


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To regroup the minuend in subtraction, you start by breaking down the minuend into smaller components, typically starting from the rightmost digit. If a digit in the minuend is smaller than the corresponding digit in the subtrahend, you borrow from the next left digit, effectively reducing it by one and adding ten to the current digit. This process continues until all digits are appropriately adjusted, allowing for a successful subtraction. Finally, perform the subtraction digit by digit from right to left.


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