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This Mixed All Operations drill has 48 problems for Grade 3. Baseball theme. Answer key included.
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Max discovered a mysterious scoreboard with missing numbers—he must solve all equations before the final inning!
Standard: CCSS.MATH.3.OA.D.8
Preview
Page 1 — Drill
Page 2 — Answer Key
What's Included
About this Grade 3 Mixed All Operations Drill
By Grade 3, students encounter math problems that mix addition, subtraction, and multiplication in a single expression—skills that form the foundation for algebraic thinking. At ages 8-9, children's brains are developing the ability to hold multiple operations in mind simultaneously and decide which to do first. This is crucial because real-world problem-solving rarely involves just one operation. When a child figures out the cost of three baseball gloves plus tax, or calculates how many cookies remain after sharing some with friends and eating a few more, they're using mixed-operations thinking. Mastering this skill prevents confusion later with order of operations and builds confidence in tackling multi-step word problems. Students who practice mixed-operations develop stronger number sense and learn that math is a logical system with consistent rules.
What your student will practice
- Solve expressions with two different operations in correct order
- Identify which operation to perform first within an expression
- Apply understanding of operation symbols to mixed-operation problems
- Build fluency solving problems with addition, subtraction, and multiplication together
Common mistakes to watch for
The most common error at this level is solving from left to right without thinking about which operation comes first. For example, students see "2 + 3 × 4" and calculate 2 + 3 = 5, then 5 × 4 = 20, when the correct answer is 14 (multiply first, then add). You can spot this by reviewing their work step-by-step and asking, "Which operation did you do first?" Many Grade 3 students haven't internalized that multiplication has priority, so they default to reading order. Another error is misreading operation symbols quickly, especially confusing × and +. Slow, careful reading and writing out each step helps prevent this.
At home or in class, use a simple real-world scenario like planning a party or organizing sports equipment. Ask your child: "If we buy 2 boxes of 6 juice boxes and add 3 more individual boxes, how many do we have?" Write it as an expression (2 × 6 + 3) and solve it together, emphasizing "multiply first, then add." Repeat with different scenarios weekly using numbers they can visualize. This makes the abstract rule concrete and memorable because they see the actual groups of items.