Grade 1Mathhard
Regrouping Practice
Regrouping Practice — Subtraction worksheet for Grade 1.
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What Your Child Will Learn
- Demonstrate the ability to regroup tens into ones when the ones place doesn't have enough to subtract from
- Solve two-digit subtraction problems where regrouping is required, such as problems where the ones digit in the minuend is smaller than the ones digit in the subtrahend
- Explain the regrouping process using visual representations (such as tens and ones blocks) and apply this understanding to complete subtraction equations
- Apply regrouping strategies to solve all 10 problems on the worksheet with accuracy and show their work step-by-step
How to Use This Worksheet
- Step 1: Start by reviewing the concept together using base-ten blocks or drawings. Show your child a problem like 24 - 8 and ask, 'Can we take 8 from 4 ones?' Guide them to see that we need to 'break' one ten into 10 ones, so now we have 14 ones and only 1 ten left. This review activates prior knowledge before tackling the worksheet.
- Step 2: Work through the first problem on the worksheet together as a model. Write out the steps: rewrite the problem, identify if regrouping is needed (ones digit on top smaller than bottom), show the regrouped numbers with a small mark-through, then solve. Let your child do the actual writing while you guide the thinking.
- Step 3: Have your child complete the next 2-3 problems independently while you observe. Ask them to explain their thinking for each step, especially why they chose to regroup. Praise the process, not just correct answers.
- Step 4: Check the independent work together. If mistakes occur, have your child explain what they did and gently walk them back through the regrouping process with a visual aid if needed. Mark errors lightly so they can self-correct.
- Step 5: Once confidence is established, have your child complete the remaining problems with minimal support. Encourage them to draw the tens and ones picture, rewrite the regrouped numbers, and show all work neatly. Celebrate completion and effort, especially if regrouping has been challenging.
Tips for Parents & Teachers
Use physical manipulatives like base-ten blocks or bundled straws to model regrouping before moving to abstract problems. Have your child physically break apart a ten into individual ones, then cross out the ones they're subtracting. This tactile experience helps cement the concept that 'borrowing' a ten means exchanging it for 10 ones.
Watch for the common mistake of subtracting in the wrong order—many first graders will subtract the larger digit from the smaller digit (e.g., in 32 - 15, they subtract 5 from 2 instead of regrouping first). Before solving each problem, have them circle which digit is bigger in the ones place and ask, 'Do we need to regroup?' This pre-check prevents careless errors.
Go slowly through the first few problems together, explicitly naming each step: 'First, we look at the ones place. Can we take away 7 from 3? No, so we need to regroup. We take 1 ten from the 4 tens and make it 10 more ones. Now we have 13 ones. Now we can subtract!' Repetition of this language helps internalize the process.
Encourage your child to draw quick pictures (tens as lines, ones as dots) next to each problem. This visual scaffold bridges concrete manipulatives and abstract numbers, making it easier for them to track what's happening during regrouping and reducing frustration.
Frequently Asked Questions
Why is my first grader struggling with regrouping when they can do simple subtraction without it?
Regrouping requires your child to understand that 1 ten equals 10 ones—an abstract concept that goes beyond counting. It also adds multiple steps to hold in memory at once, which is cognitively demanding for six or seven-year-olds. Struggle is normal. Using physical objects repeatedly helps them internalize that tens can be 'traded' for ones. This is truly 'hard' work for G1, so patience and practice are key.
Should I make my child memorize regrouping, or is it okay if they use drawings or blocks to solve these problems?
Drawings and blocks are not a crutch—they're essential tools! First graders are building understanding, not memorizing procedures. Encourage your child to use visual supports for all 10 problems if needed. Over time and with repeated practice, the process becomes more automatic. Pushing abstract work before understanding is solid will create anxiety and confusion. Let the visuals fade naturally as confidence builds.
What's the difference between 'borrowing' and 'regrouping,' and which term should I use with my child?
'Regrouping' is the modern, more accurate term because it describes what actually happens: we reorganize or regroup the tens and ones. 'Borrowing' is older language that can be confusing because you don't really 'borrow' and pay it back. Stick with 'regrouping' to align with how their teacher likely presents it. You can say phrases like 'We need to regroup a ten' or 'We're breaking a ten into ones.'
How do I know if my child is ready for hard regrouping problems, or should we practice easier subtraction first?
If your child can solve two-digit subtraction WITHOUT regrouping (like 35 - 12) and understands that a ten can be broken into 10 ones, they're ready. Signs they're not ready yet include: difficulty counting by tens, confusion about place value, or frustration that leads to giving up quickly. If not ready, return to tens and ones activities and simpler subtraction. There's no rush; understanding place value deeply is more important than speed.
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