Is Number a Factor of Both - From Variables as Factors (Level 1)

This math topic practices the skill of determining whether one number is a factor of other numbers, using prime factorization. Each problem presents prime factorizations of multiple numbers and asks if a specific factor is common to two given numbers. The learner must understand how to break numbers into their prime factors and check commonality between factorized forms.

more

Is Number a Factor of Both - From Variables as Factors

Complete this topic with 80% correct, working as fast as you can! Results are immediate.

0:00.0


Is z a factor of both 70 and 105?

z=5770=257105=357is z a factor of70 and 105?\begin{align*}z &= 5 \cdot 7\\\\[-0.5em]70 &= 2 \cdot 5 \cdot 7\\[-0.5em]105 &= 3 \cdot 5 \cdot 7\end{align*}\\\\ \textsf{is }z\textsf{ a factor of}\\70\textsf{ and }105?

?