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This Addition With Regrouping drill has 40 problems for Grade 2. Art Studio theme. Answer key included.
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Max's paint pots spilled everywhere! He must sort twenty-seven red and eighteen blue pots before the art show starts!
Standard: CCSS.MATH.2.NBT.B.5
Preview
Page 1 — Drill
Page 2 — Answer Key
What's Included
About this Grade 2 Addition With Regrouping Drill
Addition with regrouping is a crucial bridge in your second grader's math journey because it moves them beyond simple facts into real problem-solving. At ages 7-8, children's brains are ready to understand how tens and ones work together—a concept that feels almost magical when it clicks. This skill appears constantly in daily life: counting allowance, combining toy collections, or tallying points in games. When students master regrouping (carrying the one), they build the foundation for multiplication, division, and all multi-digit math ahead. More importantly, they learn that numbers can be broken apart and rebuilt in different ways, which strengthens flexible thinking. Without this skill, fractions, decimals, and algebra become much harder later on.
What your student will practice
- Recognize when the ones place needs regrouping in addition problems
- Regroup 10 ones as 1 ten and correctly write the new amount
- Add two-digit numbers with regrouping using place value understanding
- Check addition answers by thinking about tens and ones
Common mistakes to watch for
The most common error is forgetting to write down or add the regrouped ten. You'll see students get 8 + 7 = 15 correctly, but then write just the 5 in the ones place and forget to add 1 to the tens column—resulting in an answer like 15 instead of 25 when solving 18 + 7. Another frequent mistake is regrouping when it isn't needed, adding an extra ten to problems that don't require it. Watch for students who haven't yet connected the physical act of bundling (or drawing bundled tens) to the symbolic notation of writing 1 above the tens column.
Create a simple regrouping game using a snack bowl or art-studio supply container. Have your child group crackers, pretzels, or buttons into piles of 10, then count the leftovers. Say: 'We have 8 buttons here and found 6 more—that's 10 buttons for one full group of 10, plus 4 left over.' Let them physically bundle rubber bands around pencil groups or circle 10 items with a crayon. This concrete experience of seeing 14 as 'one ten and four ones' makes the regrouping step on paper make real sense.