Multifaceted Number Concepts 209Rigorous Problem Solving with the Concept of
Finding Common Multiples 1
In the game LCM Hopscotch , players are required to fi nd either
the Least Common Multiple (LCM) or a common multiple
that is not the least. Samantha drew two cards: 3 and 9.
Part C
The least common multiple of 2 numbers is 132, and the sum
of the numbers is 23.
What are the numbers?
Part A
What is the least common multiple of 3 and 9?
o 27
o 12
o 9
o 3
Part B
Write 3 common multiples of 3 and 9 that are not the least.
Use equations to prove your answers.
© 2016, Math Intervention: Grades 3–5, Jennifer Taylor-Cox, Routledge