Respuesta :
The only number that could be subtracted from 84 without regrouping is 33.
This is because the rest of the numbers in the ones place are greater than 4 (in 84). Since they are greater than 4, you would have to borrow from the tens place/regroup.
This is because the rest of the numbers in the ones place are greater than 4 (in 84). Since they are greater than 4, you would have to borrow from the tens place/regroup.