Which term describes a multiplication fact that helps you solve another related fact (for example, 3x5=15 helps with 3x6=18)?

Which term describes a multiplication fact that helps you solve another related fact (for example, 3x5=15 helps with 3x6=18)?

• A. Helper Fact
• B. Fact Family
• C. Parallel Lines
• D. Rectilinear Figure

Answer: (A)

The idea here is using a helper fact to make another calculation quicker. A helper fact is a multiplication fact that helps you solve a related fact more easily. For example, if you know that 3 × 5 = 15, you can use that to find 3 × 6 by adding one more group of 3 to 15. So 3 × 6 = 18. The known fact acts as a shortcut or stepping stone to the nearby fact, saving you from starting from scratch each time. Other terms don’t fit this specific idea. A fact family describes a group of related multiplication and division facts that reuse the same numbers, which is broader than a single helping fact. The remaining options are geometry terms and don’t describe multiplication facts at all.

The idea here is using a helper fact to make another calculation quicker. A helper fact is a multiplication fact that helps you solve a related fact more easily. For example, if you know that 3 × 5 = 15, you can use that to find 3 × 6 by adding one more group of 3 to 15. So 3 × 6 = 18. The known fact acts as a shortcut or stepping stone to the nearby fact, saving you from starting from scratch each time.

Other terms don’t fit this specific idea. A fact family describes a group of related multiplication and division facts that reuse the same numbers, which is broader than a single helping fact. The remaining options are geometry terms and don’t describe multiplication facts at all.