Which term describes a set of related multiplication facts using the same numbers?

Which term describes a set of related multiplication facts using the same numbers?

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

Answer: (C)

The main idea is recognizing a fact family: a group of related multiplication facts that share the same numbers (and often the corresponding division facts as well). For example, using the numbers 2 and 3, you get 2 × 3 = 6 and 3 × 2 = 6, and the related division facts 6 ÷ 2 = 3 and 6 ÷ 3 = 2. All of these facts use the same numbers, just arranged differently, so they form one fact family. That’s why this term is the best fit. It specifically describes a set of related multiplication facts that use the same numbers, and it naturally includes the idea that those facts are connected through inverse operations (multiplication and division). Other terms point to different ideas. Parallel lines describe two lines that never meet. A rectilinear figure is made of straight-line segments, often with right angles. Symmetry means a figure has a mirrored balance across a line or around a point.

The main idea is recognizing a fact family: a group of related multiplication facts that share the same numbers (and often the corresponding division facts as well). For example, using the numbers 2 and 3, you get 2 × 3 = 6 and 3 × 2 = 6, and the related division facts 6 ÷ 2 = 3 and 6 ÷ 3 = 2. All of these facts use the same numbers, just arranged differently, so they form one fact family.

That’s why this term is the best fit. It specifically describes a set of related multiplication facts that use the same numbers, and it naturally includes the idea that those facts are connected through inverse operations (multiplication and division).

Other terms point to different ideas. Parallel lines describe two lines that never meet. A rectilinear figure is made of straight-line segments, often with right angles. Symmetry means a figure has a mirrored balance across a line or around a point.