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This Addition With Regrouping drill has 40 problems for Grade 2. Football theme. Answer key included.
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Max must score touchdowns by solving addition problems before the final whistle blows!
Standard: CCSS.MATH.2.NBT.B.5
Addition with regrouping—also called carrying or trading tens—is a crucial bridge between simple single-digit facts and the multi-digit math your second grader will use throughout elementary school. At ages 7 and 8, children's brains are developing the ability to hold multiple steps in mind at once, making this the ideal window to build this skill. When students master regrouping, they're learning that 10 ones can become 1 ten, a foundational concept for place value understanding. This skill appears constantly in real life: calculating scores in games like football, combining money from a piggy bank, or figuring out how many cookies two batches make together. Students who solidify regrouping now will approach larger addition problems with confidence rather than frustration, and they'll have the mental flexibility to tackle subtraction with regrouping later. Practice at this stage builds both computational fluency and number sense that transfers to all future math learning.
The most common error Grade 2 students make is forgetting to add the regrouped ten to the tens column, writing only the ones digit from their sum. For example, with 24 + 18, they'll add 4 + 8 = 12, write down the 2, but then add only 2 + 1 = 3 in the tens place, getting 32 instead of 42. You'll also see students who write the entire sum (12) in the ones place, creating numbers like 1212. Watch for hesitation or counting on fingers repeatedly—this signals they haven't internalized the regrouping concept yet and need more concrete practice with base-ten blocks or bundled manipulatives before moving to abstract notation.
Play a quick game during everyday moments: ask your child to add two two-digit numbers while you're in the car, at the grocery store, or during snack time. Start with numbers that require regrouping (like 17 + 15 or 26 + 14) and have them talk through each step aloud: "9 and 6 makes 15, so I write 5 and carry the 1 ten." Hearing themselves explain regrouping reinforces the mental process far more than silent worksheet practice. Keep it to one or two problems per day to maintain enthusiasm—the goal is building confidence, not drilling until frustration sets in.