Intro & Concept
Multi-digit addition and subtraction involve carrying and borrowing. Practice breaking numbers into place values to solve efficiently.
Example: 4,562 + 3,789 = 8,351 (carry as needed)
9,403 − 2,687 = 6,716 (borrow as needed)
Score: 0
Streak: 0
Step-by-Step Examples
Example 1: Addition
2,456 + 3,789 → Add digits column by column starting from the right:
- Units: 6 + 9 = 15 → Write 5, carry 1
- Tens: 5 + 8 + 1 = 14 → Write 4, carry 1
- Hundreds: 4 + 7 + 1 = 12 → Write 2, carry 1
- Thousands: 2 + 3 + 1 = 6 → Write 6
Answer: 6,245
Example 2: Subtraction
7,302 − 4,678 → Subtract digits column by column starting from the right:
- Units: 2 − 8 → Borrow 1 from tens → 12 − 8 = 4
- Tens: 0 (borrowed) − 7 → Borrow 1 from hundreds → 10 − 7 = 3
- Hundreds: 3 (after borrow) − 6 → Borrow 1 from thousands → 13 − 6 = 7
- Thousands: 7 − 4 (after borrow) = 2
Answer: 2,624
Interactive Practice
Type the answer and check for instant feedback.
1) 4,562 + 3,421 = ?
2) 7,814 − 3,456 = ?
3) 12,345 + 7,654 = ?
4) 10,002 − 4,567 = ?
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