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.

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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Math Games for Teachers

Grade 3 - Number

Standard 3.N.10 - Practice identifying different properties of addition given an equation.

Included Skills:

Apply mental mathematics strategies and number properties in order to understand and recall basic addition facts and related subtraction facts to 18.
Achievement Indicators:
- 3N10.1 Explain or demonstrate the mental mathematics strategy that could be used to determine a basic fact, such as:
using doubles; e.g., for 6 + 8, think 7 + 7
using doubles plus one, plus two; e.g., for 6 + 7, think 6 + 6 + 1
using doubles subtract one, subtract two; e.g., for 6 + 7, think 7 + 7 – 1
making 10; e.g., for 6 + 8, think 6 + 4 + 4 or 8 + 2 + 4
using addition to subtract; e.g., for 13 – 7, think 7 + ? = 13.
using commutative property; e.g., for 3 + 9, think 9 + 3
provide a rule for determining answers when adding and subtracting zero. When you add or subtract 0 to or from a number, the answer is the number you started with.
- 3N10.2 Recall doubles to 18 and related subtraction facts.
- 3N10.3 Recall compatible number pairs for 5 and 10.
- 3N10.4 Recall basic addition facts to 18 and related subtraction facts to solve problems.

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