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Highest Common Factor Color by Number Activity

Highest common factor color by number: students find the HCF (greatest common factor) of 15 number pairs, from 4 and 14 up to 150 and 200, then color a grid using the key.
Grades
Grades 3–5, Elementary
File type
PDF
Preparation
Print ready

Updated Oct 19, 2026

Subject
Math, Patterns, Multiplication and Division, Multiplication
Topic
Color by Number Activity, Color by Code
Resource types
Activities, Worksheets & Printables, Worksheets
Preparation
Print ready

About this resource

What's inside this resource

If you teach math and are looking for engaging resources for your students, I have just the resources for you!

What You Get:

This is a Highest Common Factor Color by Number Activity. It is a 1-page printable that includes a page of problems to solve and a coloring page. An answer key is not included.

How To Implement This Color by Number Activity:

You should print off enough copies of the worksheet for each student to have. On the first page, students will find the highest common factor for each problem set on the page. They will go to the bottom of the page and colour the corresponding question number with the correct colour from the table. Students can make sure their answers are correct before they begin coloring.

This Color by Number Activity is a great way to review these math skills. This can be completed independently. You can also have students work together to solve the problems. This is a great activity for homework or early finishers.

I hope you enjoy!

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In the classroom

Teaching tips & learning objectives

Teaching tips

  • The key names specific colors such as purple and light green, so have those colors available.

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