1
Line them up
Always line up the ones, tens, hundreds and thousands.
2,345 + 1,678 ------- 4,023
Addition & Subtraction
📖 Study · Addition & Subtraction (Grade 4)
Addition & Subtraction (Grade 4)
Add and subtract 4- and 5-digit numbers.
🎯 What you'll learn
- ✓Stack big numbers
- ✓Carry across thousands
- ✓Borrow when needed
- ✓Solve word problems
2
Carrying
If a column adds to 10 or more, carry to the next column.
7 + 8 = 15 → write 5, carry 1
3
Borrowing
If you can't subtract, borrow from the next column.
5,000 − 1,234 = 3,766
4
Check by adding
After subtracting, add the answer + the smaller number → should equal the bigger.
3,766 + 1,234 = 5,000 ✅