Divisibility by 3
Browse 6 Divisibility by 3 worksheets for Grade 3 Math. These Factoring worksheets are designed to give students targeted practice and build confidence in math.
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Whether you're a teacher looking for factoring practice problems, a homeschool parent building a Grade 3 curriculum, or a tutor helping a student catch up, choose an available worksheet that matches what your student is practising.
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What to Do Next
Practice Questions
- Is 21 divisible by 3?
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(A) Yes
- Is 22 divisible by 3?
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(B) No
- Is 30 divisible by 3?
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(A) Yes
- Is 15 divisible by 3?
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(A) Yes
- Is 40 divisible by 3?
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(B) No
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Quick Tip
Teacher Resources
Teaching Notes
Teach the 'sum of digits' trick. It's magical for students.
Vocabulary
Common Mistakes
- Looking at the last digit only
- Confusing with divisibility by 2 or 5.
- Incorrectly summing the digits.
- Not checking if the *sum* is divisible by 3.
- Applying rule to single digits incorrectly.
Differentiation
Discussion Questions
- Why does the sum of digits rule work?
- How does the sum of digits rule work?
- Why is this rule useful for larger numbers?
- Can a number be divisible by 3 and 5? Give an example.
- How does divisibility relate to multiples?
Extension Activities
- Find the largest 2-digit number divisible by 3.
Parent Tip
Have your child add the digits of numbers you see daily.
Learning Path
Skill Cluster
Number Sense & Operations
Estimated Time
10 minutes