Find the missing digits.
C 2 9 7 - 4
D 2 5 = 3 3 7 2
- C
- D
| |
Thousands |
Hundreds |
Tens |
Ones |
| |
C = 8 |
2 |
9 |
7 |
| - |
4 |
D = 9 |
2 |
5 |
| |
3 |
3 |
7 |
2 |
(a)
Since 2 in the hundreds place is not enough to subtract 3, we need to regroup and borrow 1 from the thousands place.
So, we need to minus 1 from 8.
C - 1 - 4 = 3
1 + 4 + 3 =
8C =
8(b)
Since 2 in the hundreds place is not enough to subtract 3, we need to regroup and borrow 1 from the thousands place.
So, we can add 10 to 2 so that the sum 12 can be used to subtract 3.
10 + 2 -
D = 3
12 - 3 =
9D =
9 Answer(s): (a) 8; (b) 9
