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About this Grade 1 Mixed Add Subtract Drill

At age 6 and 7, children are developing the cognitive flexibility to handle problems that ask them to both add and subtract in sequence. Mixed-add-subtract drills strengthen a child's ability to read and follow multi-step instructions, a skill essential for reading comprehension and problem-solving across all subjects. When a student sees "5 + 3 - 2," they're learning to hold multiple operations in working memory and execute them in order—this builds the mental stamina needed for more complex math. These drills also help children recognize that addition and subtraction are inverse operations, deepening their number sense. Beyond the worksheet, this skill appears constantly in daily life: counting toys, losing some, then gaining more. By practicing mixed operations now, you're laying the foundation for fluency and confidence in math.

What your student will practice

• Execute two operations in correct left-to-right sequence
• Identify whether to add or subtract based on problem symbols
• Maintain accuracy while processing two steps mentally
• Build automaticity with sums and differences under 10

Common mistakes to watch for

The most common error is that students perform both operations correctly in isolation but forget the first result before applying the second operation. For example, in 6 + 2 - 3, a child might correctly compute 6 + 2 = 8, then forget the 8 and subtract 3 from 6 instead of from 8. Another frequent mistake is ignoring the operation sign and always adding, so 7 - 2 + 1 becomes 7 + 2 + 1. Parents can spot these patterns by asking the child to say aloud what number they have after the first step before moving to the second.