Find the missing digits.
- C
- D
C625 - 21D4 = 6461(a)
In the hundreds place, 6 is more than 1.
So, there is no regrouping in the thousands place.
C - 2 = 6
C = 6 + 2
C = 8
(b)
In the ones place, 5 is more than 4.
So, there is no regrouping in the tens place.
2 - D = 6
In the tens place, 6 is more than 2.
This means that there is a regrouping done in the hundreds place so that 12 can substract a certain number to get 6.
D = 12 - 6
D = 6
Answer(s): (a) 8; (b) 6
