Find the missing digits.
- R
- S
R549 - 43S7 = 3152(a)
In the hundreds place, 5 is more than 3.
So, there is no regrouping in the thousands place.
R - 4 = 3
R = 3 + 4
R = 7
(b)
In the ones place, 9 is more than 7.
So, there is no regrouping in the tens place.
4 - S = 5
In the tens place, 5 is more than 4.
This means that there is a regrouping done in the hundreds place so that 14 can substract a certain number to get 5.
S = 14 - 5
S = 9
Answer(s): (a) 7; (b) 9