Max Conquers the Soccer Stadium Math Challenge

About this Grade 2 Mixed Add Subtract Drill

At age 7–8, students are building the mental flexibility to handle problems that ask them to both add and subtract in one go. This is a critical stepping stone because it moves children beyond simple, single-operation problems toward the kind of thinking they'll need for word problems, multi-step math, and real-world situations where quantities change in different directions. When a child can fluently solve 8 + 5 − 3 without counting on their fingers, they're developing number sense and strengthening working memory—the ability to hold and manipulate information in their minds. Mixed-add-subtract drills also build automaticity, so computation becomes fast enough that children can focus their mental energy on understanding what a problem is asking, not just getting the answer. This skill directly supports confidence and reduces math anxiety as students move into Grade 3, where these mixed operations become even more common.

What your student will practice

• Solve mixed addition and subtraction problems with fluency and accuracy
• Recognize the operation symbol and apply the correct action to each number
• Build working memory by holding multiple numbers and operations in mind
• Develop automaticity so computation becomes quick and confident

Common mistakes to watch for

The most common error is students reversing the operation or skipping the second step entirely. For example, when given 9 + 4 − 5, a child might only compute 9 + 4 = 13 and forget to subtract the 5, or they might add both numbers instead of subtracting the last one. Another frequent mistake is left-to-right confusion: younger students sometimes compute from right to left, especially if the subtraction comes first. Parents and teachers can spot this by asking the child to point to and say the operation symbol aloud before solving—this builds awareness and slows them down just enough to catch errors.