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This Mixed Add Subtract drill has 40 problems for Grade 2. Stars theme. Answer key included.
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Max discovered falling stars crash-landing across the galaxy! He must solve math problems to catch all thirty stars before they vanish into space.
Standard: CCSS.MATH.2.OA.B.2
Preview
Page 1 — Drill
Page 2 — Answer Key
What's Included
About this Grade 2 Mixed Add Subtract Drill
Mixed addition and subtraction problems are a crucial stepping stone in Grade 2 math because they require students to slow down, read carefully, and choose the right operation. At this age, children are moving beyond simple single-operation drills and beginning to think flexibly about numbers. When your second grader sees a problem like "5 + 3 – 2," they're practicing vital skills: tracking two different operations, managing working memory, and applying logic to a multi-step situation. These are the exact mental habits needed for word problems, real-world math scenarios like combining toys and giving some away, and more complex math later on. By practicing mixed-add-subtract in a low-pressure grid format, students build confidence and automaticity, freeing up their brain space for deeper problem-solving.
What your student will practice
- Solve mixed addition and subtraction problems in a single equation
- Identify and apply the correct operation symbol to each part
- Compute accurately from left to right in two-step expressions
- Build fluency and speed with automaticity
Common mistakes to watch for
The most common error Grade 2 students make is ignoring the operation symbol and defaulting to addition, especially when subtraction follows. For example, a student might see "6 + 2 – 1" and compute 6 + 2 + 1 = 9 instead of the correct answer, 7. Another frequent mistake is reversing the order of operations by subtracting the first number from the second. Watch for students who hesitate or look confused when the operation changes mid-problem, as this signals they haven't internalized the need to read each symbol carefully.
Play a "store transaction" game during snack time or play. Start with a pile of crackers or small objects (like 8), then add some more ("I'm adding 3"), count aloud together, then remove a few ("Now I'm taking away 2"). Ask your child to tell you how many are left. This mirrors the structure of mixed problems and anchors the concept to something tangible and fun. Repeat this pattern a few times, sometimes starting with subtraction, so the sequence feels natural and real rather than abstract.