1
Stack & line up
Always line up the ones, tens, hundreds and thousands.
3214 + 1234 ------ 4448
Addition & Subtraction
📖 Study · Addition and Subtraction (big numbers)
Addition and Subtraction (big numbers)
Stack the numbers and add column by column. Carry over when you go past 9.
🎯 What you'll learn
- ✓Add 3- and 4-digit numbers
- ✓Subtract with borrowing
- ✓Solve word problems
2
Carrying
If a column adds to 10 or more, write the ones and carry the tens to the next column.
47 + 35 ---- 82 (7+5=12, carry 1)
3
Borrowing
If you can't subtract, borrow from the next column.
53 − 18 ---- 35