Max Rescues Wild Animals: Addition Subtraction Sprint!

About this Grade 2 Mixed Add Subtract Drill

Mixed addition and subtraction problems are a critical milestone for second graders because they require students to slow down, read carefully, and choose the correct operation—a skill that directly transfers to real-world situations like managing lunch money, keeping score in games, or tracking a growing collection of trading cards. At ages 7-8, children are developing the metacognitive awareness needed to notice whether a problem asks them to combine or remove, rather than defaulting to one operation. This worksheet builds flexibility in mathematical thinking and strengthens the neural pathways that help students transition from simple, single-operation problems to the mixed formats they'll encounter throughout elementary math. Mastery here prevents the common stumbling block many students hit in third grade when word problems become more complex.

What your student will practice

• Identify whether a problem requires addition or subtraction by reading operation symbols
• Solve addition and subtraction problems within 20 with mixed formats
• Check answers by reversing operations or using mental math strategies
• Build fluency and confidence with mixed-operation drill sequences

Common mistakes to watch for

The most common error is students rushing through and performing the same operation on every problem—for example, adding 7 + 5 correctly, then reflexively adding again on the next problem that actually requires subtraction (12 - 5). Another frequent mistake is misreading the symbol, especially when + and − are positioned differently on the page. Watch for students who skip the operation symbol entirely or who hesitate longer on subtraction problems, indicating less fluency with that operation. If a child gets more than two consecutive problems wrong, check whether they're actually reading the symbol or just pattern-matching from the previous answer.