# Addition

Learn and practice adding numbers and perfect your addition skills with interactive resources from GeoGebra.

## Upper Elementary

GRADES 4-5### Estimating Decimal Sums and Differences

Estimate and compute sums and differences with decimals.

### Estimating Sums and Differences

Apply appropriate type of estimation for sums and differences.

### Multi-digit Addition with Regrouping

Add multi-digit numbers with regrouping in number and word problems.

### Properties of Addition and Multiplication

Use the commutative and associative properties to add or multiply numerical expressions.

## Middle School

GRADES 6-8### Adding and Subtracting Integers

Model or compute with integers using addition or subtraction in number and word problems.

### Additive and Multiplicative Inverse

Identify additive inverses (opposites) and multiplicative inverses (reciprocals) and use them to solve number and word problems.

### Related Topics

## Community Resources

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