Max Rescues the Lost Geese: Addition Sprint!

About this Grade 3 Addition With Regrouping Drill

Addition with regrouping is a turning point in your child's math journey. At ages 8–9, students are moving beyond simple facts to multi-digit problems that require flexible thinking about place value. When your child adds 27 + 15 and realizes the ones column makes 12, they're learning to "trade" 10 ones for 1 ten—a skill that builds the foundation for multiplication, division, and algebra later. This isn't just arithmetic; it's learning how our number system works. Mastering regrouping boosts confidence and shows children that problems can be broken into smaller, manageable steps. It's also deeply practical: calculating the cost of school supplies, tracking classroom supplies like a flock of geese counting their eggs, or figuring out how many pages two books have together all rely on this skill.

What your student will practice

• Add two-digit numbers with regrouping in the ones place
• Identify when ones column totals 10 or more and regroup correctly
• Write regrouped tens above the tens column accurately
• Solve word problems using two-digit addition with regrouping

Common mistakes to watch for

The most common error is forgetting to add the regrouped ten to the tens column after trading. You'll see a child write 27 + 15 = 312 instead of 42—they get the ones correct (7 + 5 = 12, write 2) but then ignore the 1 ten they just created. Another frequent mistake is writing the regrouped number in the wrong place or losing track of it entirely. Look for students who rush and don't clearly mark where the extra ten goes. Watching them work through one problem aloud will quickly reveal whether they understand the "why" behind moving the ten or are just following a half-remembered rule.