Math3-5
Divisibility Rules for 2 and 3 Warm-Up
By Sarah H.
A short worksheet for 5th graders that teaches the divisibility tests for 2 and 3, starting with a worked example (132) and moving to practice problems. It builds number sense and mental math skills and works well as a quick warm-up or a 20-minute independent practice block.
Customize for your classroom
Teacher Guide & Tips
- Use this as a warm-up at the start of a math lesson on factors and multiples, or as a short practice set after introducing the two rules.
- Discussion question: Why does only the last digit matter for divisibility by 2, but all the digits matter for divisibility by 3?
- Scaffold for struggling readers: Walk through the worked example aloud together, then have students copy the two rules onto an index card to reference while solving.
- Extension for advanced students: Ask them to find a number that is divisible by 6 and explain why passing both tests guarantees divisibility by 6.
- Estimated time: About 20 minutes including the worked example and practice problems.
Math3-5
Divisibility Rules for 2 and 3 Warm-Up
By Sarah H.
A short worksheet for 5th graders that teaches the divisibility tests for 2 and 3, starting with a worked example (132) and moving to practice problems. It builds number sense and mental math skills and works well as a quick warm-up or a 20-minute independent practice block.
Customize for your classroom
Teacher Guide & Tips
- Use this as a warm-up at the start of a math lesson on factors and multiples, or as a short practice set after introducing the two rules.
- Discussion question: Why does only the last digit matter for divisibility by 2, but all the digits matter for divisibility by 3?
- Scaffold for struggling readers: Walk through the worked example aloud together, then have students copy the two rules onto an index card to reference while solving.
- Extension for advanced students: Ask them to find a number that is divisible by 6 and explain why passing both tests guarantees divisibility by 6.
- Estimated time: About 20 minutes including the worked example and practice problems.