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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 - Number

Standard 3.N.10 - Analyze and identify the property of multiplication shown in the equation.

Included Skills:

Apply mental mathematics strategies and number properties, such as:

• using doubles

• making 10

• using the commutative property

• using the property of zero

• thinking addition for subtraction

to recall basic addition facts to 18 and related subtraction facts.

• Achievement Indicators

• Students who have achieved this outcome(s) should be able to:

- Describe a mental mathematics strategy that could be used to determine a given basic fact, such as:

• doubles, e.g., for 6 + 8, think 7 + 7

• doubles plus one, e.g., for 6 + 7, think 6 + 6 + 1

• doubles take away one, e.g., for 6 + 7, think 7 + 7 – 1

• doubles plus two, e.g., for 6 + 8, think 6 + 6 + 2

• doubles take away two, e.g., for 6 + 8, think 8 + 8 – 2

• making 10, e.g., for 6 + 8, think 6 + 4 + 4 or 8 + 2 + 4

• commutative property, e.g., for 3 + 9, think 9 + 3

• addition to subtraction, e.g., for 13 – 7, think 7 + ? = 13.

- Provide a rule for determining answers for adding and subtracting zero.

- Recall basic addition facts to 18 and related subtraction facts to solve problems.

If you notice any problems, please let us know.