Addition & Subtraction Within 100
Learn to add and subtract larger numbers using place value understanding!
What You'll Learn
- Add two-digit numbers within 100
- Subtract two-digit numbers within 100
- Use place value for calculations
- Understand regrouping (borrowing and carrying)
Why This Matters
Using place value to add and subtract helps you work with bigger numbers more easily. Instead of counting one by one, you can work with tens and ones separately, making math faster and more efficient!
Quick Example
34 + 25
3 tens + 2 tens = 5 tens = 50
4 ones + 5 ones = 9 ones = 9
50 + 9 = 59