Grade 3/Division
Divide by Whole Tens or Hundreds (858)
Divide compatible multiples by whole tens or hundreds.
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Quick Tip
Solve mentally and write the quotient in the blank.
Teacher Resources
Teaching Notes
Spot compatible numbers to avoid long algorithms.
Vocabulary
whole tens: Multiples of ten (10, 20, 30...).
whole hundreds: Multiples of one hundred (100, 200...).
Common Mistakes
- Miscounting zeros
- Treating 30 like 3
- Incorrectly dropping zeros
- Confusing division with multiplication
- Ignoring place value rules
- Miscalculating basic facts
Differentiation
SupportUse manipulatives or visual models to demonstrate place value.
ChallengeIntroduce larger numbers or problems with decimals (e.g., 600 ÷ 300).
Discussion Questions
- How does understanding place value help with this division?
- When might you use this skill for estimation?
- Can you explain your mental math strategy?
- How is this related to multiplication by tens or hundreds?
Extension Activities
- Use money to model division.
- Practice with larger numbers.
- Relate to multiplication.
Parent Tip
Ask your child to help divide larger amounts into groups of tens or hundreds.
Learning Path
Skill Cluster
Number Sense & Operations
Estimated Time
10 minutes
Skills Practiced
compatible numbers div
Prerequisites
- Multiply by 10 or 100
- Place Value to Thousands
- Basic Division Facts
Next Steps
- Divide with 1-Digit Divisors
- Estimate Quotients
- Divide with 2-Digit Divisors
- Divide Multi-Digit Numbers by 1-Digit Divisors
- Divide Multi-Digit Numbers by 2-Digit Divisors
- Division with Remainders