Factors and Factor Pairs Word Problems
Teach factor pairs by arranging a fixed collection into complete rows.
Teaching notes for parents and teachers
How to teach it
Make different arrays without adding or removing counters. Record each row size and its matching number of rows.
Example to work through together
Use the model below as you explain the example. Have your student point to the quantities as you discuss them.
Turn each arrangement to see 12 rows of 1, 6 rows of 2, and 4 rows of 3.
Possible counts per row: 1, 2, 3, 4, 6, 12
These are six possible row sizes. There are three factor pairs when reversed pairs are counted only once.
Ask your student
How do we know we have found every factor pair?
If your student needs help
If a proposed factor leaves counters over, check it by making the rows or dividing.
Make a practice set
Select the worksheet, answer key, or both. When both are selected, the answer key prints after the questions. Keep it separate if you want your student to work independently.
After your student finishes
Check that the child found every row size, not just one arrangement. Accept a correct list in any order; use factor pairs to look for missing partners.
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