don't know
96475
There is no such number. You can add 456000 or 456878322168000 or even 1581687671173873681773618733111
It is 634. 9-3 = 6 9-6 = 3 9-5 = 4 365 +634 =999 No regrouping required.
6 times
-423
Any number. Not everyone needs to regroup.
96475
100
634
There is no such number. You can add 456000 or 456878322168000 or even 1581687671173873681773618733111
Oh, dude, you can add up to 9 to 74,253 without having to regroup. So, like, you could add 9 and get 74,262, but if you tried to add 10, you'd have to regroup and carry the one. But hey, who's counting, right?
It is 634. 9-3 = 6 9-6 = 3 9-5 = 4 365 +634 =999 No regrouping required.
6 times
You can add up to 5 counters without having to regroup, as the total number of counters would then be 29. Since counting is typically done in base 10, adding 5 to 24 keeps the sum below 30, which does not require regrouping into the next ten. Adding 6 or more would push the total to 30 or above, necessitating a regroup.
-423
The greatest three-digit number you can add to 457 without regrouping in any place is 543. This is because you need to ensure that the sum in each digit place (hundreds, tens, and units) does not exceed the maximum value of that place. Adding 543 to 457 gives you 1000, which does not require any regrouping since each digit place remains within its limit.
I take this question to mean what number when added to 457 will yield 999. In this case it is 542.