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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.3 - Practice using addition and subtraction to solve for a variable.
Included Skills:
Solve one-step addition and subtraction equations involving symbols representing an unknown number.
• Explain the purpose of the symbol, such as a triangle or a circle, in an addition or a subtraction equation with one unknown.
• Create an addition or subtraction equation with one unknown to represent a combination or separation action.
• Provide an alternative symbol for the unknown in an addition or subtraction equation.
• Solve an addition or subtraction equation that represents combining or separating actions with one unknown, using manipulatives.
• Solve an addition or subtraction equation with one unknown using a variety of strategies including guess and test.
• Explain why the unknown in an addition or subtraction equation has only one value.
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