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SubscribeUnlock harder levels by getting an average of 80% or higher.

Earn up to 5 stars for each level

The more questions you answer correctly, the more stars you'll unlock!

Each game has 10 questions.

Green box means correct.

Yellow box means incorrect.

Unlock harder levels by getting an average of 80% or higher.

Earn up to 5 stars for each level

The more questions you answer correctly, the more stars you'll unlock!

Each game has 10 questions.

Green box means correct.

Yellow box means incorrect.

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Grade 3 - Patterns and Relations

Standard 3.PR.4 - Practice using addition and subtraction to solve for a variable.

Included Skills:

Solve one-step addition and subtraction equations involving a symbol to represent an unknown number.

• Explain the purpose of the symbol in a given addition or subtraction equation with one unknown; e.g., in the equation 3 + ? = 10, the triangle represents the number that would make the equation true.

• Create an addition or subtraction equation with one unknown to represent a given combining or separating action.

• Provide an alternative symbol for the unknown in a given addition or subtraction equation.

• Solve, using manipulatives, a given addition or subtraction equation with one unknown that represents combining or separating actions.

• Solve a given addition or subtraction equation with one unknown, using a variety of strategies, including guess and test.

• Solve a given addition or subtraction equation when the unknown is on the left or the right side of the equation.

• Explain why the unknown in a given addition or subtraction equation has only one value.

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