Quick explanation:
Brief explanation: To add two numbers, we align them vertically by place value and add each column starting from the right, carrying over when a sum exceeds 9.
Step-by-step solution:
- Step 1: Add the ones column: 1 + 8 = 9.
- Step 2: Add the tens column: 1 + 7 = 8.
- Step 3: Add the hundreds column: 9 + 3 = 12. Write down 2 and carry over 1 to the thousands column.
Answer: 1289