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This Mixed Add Subtract drill has 40 problems for Grade 2. Popcorn theme. Answer key included.
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Max's popcorn machine broke and kernels scattered everywhere! He must solve problems fast to fix it before the big movie starts!
Standard: CCSS.MATH.2.OA.B.2
By second grade, students need to move beyond simple addition or subtraction to handle problems that mix both operations in a single step. This skill is foundational for all future math because real life rarely presents problems in isolation—a child might earn points, lose points, then gain more points all in one scenario. Mixed-add-subtract problems train your child's brain to read carefully, decide which operation comes first, and hold multiple pieces of information at once. At ages 7–8, children are developing working memory and logical thinking; practicing these problems strengthens their ability to follow a sequence of steps. Whether tracking allowance, counting classroom supplies, or managing game scores, students who master this skill gain confidence and independence in everyday problem-solving.
Many second graders reverse operations—they'll subtract when they see a plus sign, or add when they see minus. Others solve correctly but forget to check their work, leading to careless errors that could have been caught. Watch for students who skip reading the entire problem and only react to the first operation they spot; they might miss the second part entirely. If a child writes 15 + 3 − 2 = 20, they've likely added both numbers instead of subtracting the last one. Have them point to each symbol and say the word aloud before solving.
Create a simple two-step scenario during snack time or playtime. For example, if you have 12 crackers and your child takes 4, then you add 3 more to the pile, ask them to figure out how many are left. Start with numbers under 20 so they can use fingers or count small objects if needed. The key is doing this casually and repeatedly—like when counting popcorn at a party, adding to a pile, then taking some away—so children see these mixed operations as natural, everyday math rather than worksheet exercises.