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Addition

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.

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探索

GR. 4-5

Estimating the Sum of Decimals up to Two Decimal Places

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探索

GR. 4-5

Estimating the Difference of Decimals up to Two Decimal Places

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探索

GR. 4-5

Aligning Decimals for Sums and Differences

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练习

GR. 4-5

Estimating Decimal Sums

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练习

GR. 4-5

Estimating Decimal Differences

Estimating Sums and Differences

Apply appropriate type of estimation for sums and differences.

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练习

GR. 4-5

Two-Digit Addition and Subtraction Estimation Game

Multi-digit Addition with Regrouping

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

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探索

GR. 4-5

Adding Multi-Digit Numbers

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练习

GR. 4-5

Multi-Digit Addition with Regrouping

Properties of Addition and Multiplication

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

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GR. 4-5

Visualizing the Commutative Property of Addition

Middle School

GRADES 6-8

Adding and Subtracting Integers

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

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GR. 6-8

Adding and Subtracting Integers with Balloons and Sandbags

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GR. 6-8

Adding and Subtracting More Integers with Balloons and Sandbags

Additive and Multiplicative Inverse

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

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探索

GR. 6-8

Additive Inverse

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练习

GR. 6-8

Adding Opposites

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