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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 4 - Number

Standard 4.N.5 - Understand the relationship between multiplication and division to solve the equation.

Included Skills:

Describe and apply mental mathematics strategies to determine basic multiplication facts to 9 × 9 and related division facts.

• Provide examples for applying mental mathematics strategies:

- skip counting from a known fact; e.g., for 3 × 6, think 3 × 5 = 15 plus 3 = 18.

- doubling; e.g., for 4 × 3, think 2 × 3 = 6 and 4 × 3 = 6 + 6.

- doubling and adding one more group; e.g., for 3 × 7, think 2 × 7 = 14 and 14 + 7 = 21.

- patterns when multiplying by 9; e.g., for 9 × 6, think 10 × 6 = 60, and 60 – 6 = 54; for 7 × 9, think 7 × 10 = 70, and 70 – 7 = 63.

- halving; e.g., if 4 × 6 is equal to 24, then 2 × 6 is equal to 12.

- relating division to multiplication; e.g., for 64 ÷ 8, think 8 × ? = 64.

- repeated doubling; e.g., for 4 × 6, think 2 × 6 = 12 and 2 × 12 = 24.

• Demonstrate understanding and application of strategies for multiplication and related division facts to 9 × 9.

• Demonstrate recall/memorization of multiplication and related division facts to 7 × 7.

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