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When the sum of the digits you are adding is 10 or larger.

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10y ago

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Related Questions

Why do you sometimes need to regroup in 3-digit addition?

because 1 is toobig


Can you regroup on a subtracting problem?

yes u can if you need too


Write an addition problem with 3 addends in which you regroup once to solve?

Sure! Consider the addition problem: 27 + 46 + 35. To solve, first add 27 and 46, which equals 73. Then, you can regroup by adding the tens from 73 and 35, resulting in 70 + 5 = 75. Therefore, the total is 75.


Why do you sometimes need to regroup in 3 digit addition?

because sometimes the total is too big


Do you only need to regroup in addition if the number is greater than 9?

yes because i said so losers


When do you need to regroup hundreds in a subtraction problem?

When the lower digit is greater than the upper one.


How do you write an addition problem with 3 addends in which you regroup once to solve?

3 addends mean 3 numbers. Regroup I believe means carry over. So I'm thinking something like 36+29+12=


When do you need to regroup?

No


When do you need to regroup in addition?

If the only operation you are working with is addition you don't need to. However, if dealing with a long list of numbers, it may be useful to regroup into tens and hundreds and other "round numbers" that you can sum together quickly at the end. For example 12 + 26 + 88 + 74 = 12 + 88 + 26 + 74 = (12 + 88) + (26 + 74) = 100 + 100 = 200


Do you need to regroup to find 73 - 35?

38


How do you know if you need to regroup when finding a sum?

If the total in any column exceeds nine, you will have to regroup.


Do you need to regroup the ones in 48?

no