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This Addition With Regrouping drill has 40 problems for Grade 2. Soccer theme. Answer key included.
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Max discovered 47 soccer balls scattered across the field—he must count them all before the big tournament 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 cornerstone skill that bridges single-digit facts and the larger number strategies your child will use throughout elementary math. At ages 7 and 8, children's brains are developing the working memory and abstract thinking needed to hold multiple steps in their heads at once—exactly what happens when they rename 10 ones as 1 ten. This skill matters because it appears in nearly every math context: tracking allowance, combining scores in sports like soccer, or adding up items at a store. Mastering regrouping now prevents frustration later with multi-digit addition and even subtraction. Students who understand "trading" 10 ones for a ten develop stronger number sense and realize that our base-10 system isn't just rules to follow—it's a logical way to organize quantities.
What your student will practice
- Add two-digit numbers by regrouping ones into tens
- Recognize when a ones column sum equals 10 or more
- Write regrouped tens in the correct column position
- Solve addition problems with regrouping using pictures and numerals
Common mistakes to watch for
The most common error is students forgetting to add the regrouped ten to the tens column—they'll get 17 ones, correctly write 7 in the ones place, but then forget about that extra ten. You'll spot this when the child has done the hard part (renaming) but gets the final answer wrong. Another frequent mistake is placing the regrouped ten in the wrong spot or writing two digits in the ones column instead of regrouping. Watch for messy recording of the small "1" that shows the regrouped ten; if it's hard to see, the student may simply lose track of it.
Grab 20-30 small objects—pennies, crackers, blocks, or even buttons—and have your child physically bundle ones into groups of ten using rubber bands or cups. Say aloud: 'We have 18 ones. Let's make one group of 10 and see 8 ones left over.' Repeat with different totals (24, 15, 19 ones), letting them bundle and count the groups. Then show how this matches the worksheet: ones that add to 10 or more become a new ten. This concrete action cements the 'why' behind regrouping before it's just pencil-and-paper work.