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In the video below i explain an idea of breaking down the concept of regrouping borrowing so that students can see what actually happens in it. Then regrouping means that 50 2 becomes 40 12.

Excellent Way To Conceptually Teach Subtraction With Regrouping

So let s go place by place and we can realize where we have to do some borrowing or regrouping.

How to explain borrowing in subtraction. 45 39 06 while subtracting 9 from 5 we have to borrow 1 as 5 is more than 9 in a very simple way. 6 is less than 8 but the whole number is bigger. Subtract 1 from the top number in the column directly to the left.

Subtraction by regrouping also called borrowing or trading to subtract numbers with more than one digit. This makes the process totally transparent. Write down the larger number first and the smaller number directly below it making sure to line up the columns.

Then do subtractions one column at a time like this press play button. One example is 46 38. Cross out the number you re borrowing from subtract 1.

Regrouping is when a number is bigger than the number you are subtracting by and you have to borrow. Cross out the digit in the tens place subtract one from it and write that number on top of the digit in the tens place. This means you are taking ten away from the 4.

For example suppose you want to subtract 386 94. Borrowing is a two step process. Borrowing is regrouping down through the place value columns moving from hundreds to tens to units.

Then because of this you will have to borrow one from 4 and make the 6 a 16. In subtraction regrouping is called borrowing. Write the 1 in front of the zero in the ones place.

Add 10 to the top number in the column you were working in. Here is an example of borrowing regrouping in subtraction. Smaller number bigger number.

When performing subtraction borrowing is used when the digit being subtracted is larger than the digit being subtracted from. For example to subtract 52 38 we write 52 as 50 2 breaking it down into its tens and ones. It explains how to do subtraction with double digit numbers with borrowing e g.

Let s try to subtract 164 from 301 and i encourage you to pause this video and try it on your own first. Explain the same process when subtracting the numbers in the tens hundreds thousands and the remainder of digits in the problem.