Grade 3/Order of Operations
Order of Operations: Add, Subtract, Multiply
Longer equations with 6 numbers involving addition, subtraction, and multiplication. Students must strictly follow the order of operations.
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Teacher Resources
Teaching Notes
Encourage students to underline the step they are solving and rewrite the rest of the equation below it.
Vocabulary
Multiply: Adding a number to itself many times.
Add/Subtract: Combining or taking away numbers.
Common Mistakes
- Solving left to right without checking for multiplication first.
- Incorrect operation order
- Calculation errors
- Ignoring parentheses
- Working left-to-right prematurely
Differentiation
SupportUse colored pencils to box the multiplication parts.
ChallengeCreate an equation that equals 100.
Discussion Questions
- Why is order of operations important?
- What happens if you don't follow the rules?
- Can you create an expression that equals 20?
- How does a calculator follow these rules?
Extension Activities
- Add division to problems.
- Use larger numbers.
- Create longer equations.
Parent Tip
Have your child explain why multiplication comes before addition.
Learning Path
Skill Cluster
Number Sense & Operations
Estimated Time
25 minutes
Skills Practiced
long chain operations
Prerequisites
- 893
- Basic operations (Add/Sub/Mult)
- Understanding parentheses in expressions
Next Steps
- Order of operations with division
- Expressions with exponents
- Order of Operations: Add/Sub/Mult/Div
- Evaluating Expressions with Variables