Answer
1,045
Work Step by Step
1. Subtract the ones column: 9 – 4 = 5
2. Subtract the tens column by regrouping so 0 becomes 10: 10 – 6 = 4
3. Subtract the hundreds column (0 became 10 which became 9 after regrouping): 9 – 9 = 0
4. Subtract the thousands column where 9 becomes 8: 8 – 7 = 1
The answer is 1,045.