Find the missing digits.
X 8 9 2 - 3
Y 5 6 = 3 9 3 6
- X
- Y
| |
Thousands |
Hundreds |
Tens |
Ones |
| |
X = 7 |
8 |
9 |
2 |
| - |
3 |
Y = 9 |
5 |
6 |
| |
3 |
9 |
3 |
6 |
(a)
Since 8 in the hundreds place is not enough to subtract 9, we need to regroup and borrow 1 from the thousands place.
So, we need to minus 1 from 7.
X - 1 - 3 = 3
1 + 3 + 3 =
7X =
7(b)
Since 8 in the hundreds place is not enough to subtract 9, we need to regroup and borrow 1 from the thousands place.
So, we can add 10 to 8 so that the sum 18 can be used to subtract 9.
10 + 8 -
Y = 9
18 - 9 =
9Y =
9 Answer(s): (a) 7; (b) 9
