1
Stack and add
Line up the ones, the tens, and the hundreds. Add column by column.
234 + 142 ----- 376
Addition & Subtraction
📖 Study · Addition & Subtraction within 1000
Addition & Subtraction within 1000
We add and subtract big numbers by stacking and carrying or borrowing.
🎯 What you'll learn
- ✓Add 2- and 3-digit numbers with carrying
- ✓Subtract with borrowing
- ✓Solve word problems
2
Carrying
If a column adds to 10 or more, carry the 1 to the next column.
47 + 35 ---- 82 (7+5=12, carry 1)
3
Borrowing
If you can't subtract, borrow 10 from the next column.
53 − 18 ---- 35
4
Word problems
Read carefully — does the number get bigger (add) or smaller (subtract)?
Aishath has 234 stickers and gets 78 more. Total? 234 + 78 = 312