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Answers for “为什么因数树中的某些数字被圈出?”

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Understand why

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Numbers in the factor tree are circled to indicate that they are prime numbers, which serve as terminal leaves and cannot be broken down further in this procedure.

Conditions: A branch is continued only if the current number is composite.; A branch stops once the current number is prime.

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A factor tree is a visual method where you start with the number at the top, branch it into any two factors, and continue branching composite factors until all the end branches (leaves) are prime numbers.

Conditions: Used for factoring composite numbers.; Each parent node must equal the product of its two child factors.; Composite branches must be split again.; Prime branches are terminal and are circled in this lesson.