Max Rescues Lost Photos: Subtraction Sprint!

About this Grade 2 Subtraction Drill

Subtraction is a critical thinking skill that helps second graders make sense of the world around them—from figuring out how many crayons are left after sharing, to understanding change at a store, to organizing their belongings. At ages 7-8, children are developing number sense and moving beyond counting on their fingers to using mental math strategies. Strong subtraction skills build confidence and prepare students for multi-digit problems in third grade. When children practice subtraction regularly, they strengthen their ability to decompose numbers, understand inverse relationships (how subtraction and addition connect), and develop automaticity with basic facts—all essential foundations for math success. These drills help students internalize facts so they can focus mental energy on problem-solving rather than calculation.

What your student will practice

• Solve single-digit and teen subtraction facts fluently with automaticity
• Apply regrouping or borrowing strategies for two-digit subtraction problems
• Recognize and use subtraction as take-away and comparison in context
• Build speed and accuracy with repeated practice on mixed subtraction scenarios

Common mistakes to watch for

Many second graders accidentally subtract the smaller number from the larger digit instead of following place value rules—for example, solving 32 − 15 by doing 5 − 2 instead of properly regrouping. Another common pattern is reversing the order: a student sees 8 − 5 but calculates 5 − 8 instead. Watch for students who skip the regrouping step entirely when the ones place requires borrowing from the tens, leaving answers that don't make sense. You'll spot this when a student writes down an answer that's larger than the starting number, or when they consistently struggle with problems like 20 − 7.