Find the missing digits.
- R
- S
R739 - 29S1 = 5798(a)
In the hundreds place, 7 is less than 9.
So, there is regrouping in the thousands place.
R - 1 - 2 = 5
R = 5 + 2 + 1
R = 8
(b)
In the ones place, 9 is more than 1.
So, there is no regrouping in the tens place.
3 - S = 9
In the tens place, 9 is more than 3.
This means that there is a regrouping done in the hundreds place so that 13 can substract a certain number to get 9.
S = 13 - 9
S = 4
Answer(s): (a) 8; (b) 4