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This Addition With Regrouping drill has 40 problems for Grade 2. New Year theme. Answer key included.
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Max must solve 25 addition problems before midnight strikes to unlock the New Year's fireworks!
Standard: CCSS.MATH.2.NBT.B.5
Addition with regrouping is a crucial bridge skill that helps second graders move beyond single-digit facts into two-digit thinking. At ages 7–8, students are developing the mental flexibility to understand that 10 ones can become 1 ten, which is foundational for all future math. When your child adds 17 + 5 or 24 + 18, they're not just memorizing; they're learning how our number system actually works. This skill builds number sense and prepares them for multiplication, division, and algebra later on. In real life, children use this when combining scores in games, counting allowance, or tracking items during activities like New Year's resolution trackers. Mastering regrouping now means they'll approach larger numbers with confidence rather than anxiety.
The most common error is forgetting to regroup when the ones place adds to 10 or more. For example, a child might write 17 + 5 = 112 instead of 22, treating the 1 and 2 as separate answers rather than understanding 12 as the new ones and regrouping the ten. Watch for students who add correctly but forget to carry the ten to the tens column, or who add the carried ten but then double-count it. You'll spot this pattern when the answer is off by exactly 10.
Play a quick grocery-store game at home: give your child two prices under 30 cents each and ask them to find the total. Use real items or price tags if possible. Have them physically count or draw out the coins, bundling every 10 pennies into a group to represent regrouping. This concrete, hands-on experience mirrors what happens on paper and helps seven- and eight-year-olds see that 'carrying the ten' is a real action, not an arbitrary rule.