Regrouping into blocks of 10
Written by Adi Ackerman, Head Teacher
"Regrouping into blocks of 10" is written for 1st Grade (Ages 6-7), and it covers Common Core 1.NBT.B.2. If your little one is a year younger but already steady on base 10 blocks, the page still works. You may just need to read the instructions out loud. And if they are older and regrouping into blocks of 10 never quite stuck, this is a short review rather than busywork.


Circle each group of ten blocks and write the 2-digit number they show Part of our regrouping into blocks of 10 base 10 blocks collection. Aligned to Common Core standards.
How do I use this worksheet?
Before handing out the worksheet, briefly introduce the concept with a short oral warm-up or a visual model on the board. Let students work through the first item together as a class, then finish the rest independently or with a partner, encouraging them to talk through their thinking: "What strategy are you using? How do you know that is right?" After completing the worksheet, review any missed problems together and discuss the reasoning rather than just the answer. For extra support, let students use manipulatives or draw pictures alongside the written problems. These regrouping into blocks of 10 worksheets work well as daily practice, homework, or a focused review activity.
What students will practice
- Students will recognize and apply regrouping into blocks of 10 concepts using number lines, ten-frames, and drawn models.
- Students will solve problems involving regrouping into blocks of 10 with increasing accuracy and confidence.
- Students will connect regrouping into blocks of 10 skills to real-world situations and explain their reasoning clearly.
Curriculum Links
Common Core State Standards
Number and Operations in Base Ten · 1st Grade
Standard: Understand that the two digits of a two-digit number represent amounts of tens and ones.
View all 1.NBT.B.2 worksheets →Find this in the curriculum
Browse the grade, subject, and topic this belongs to.
FAQ
How do I use this regrouping into blocks of 10 worksheet?
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Before handing out the worksheet, briefly introduce the concept with a short oral warm-up or a visual model on the board. Let students work through the first item together as a class, then finish the rest independently or with a partner, encouraging them to talk through their thinking: "What strategy are you using? How do you know that is right?" After completing the worksheet, review any missed problems together and discuss the reasoning rather than just the answer. For extra support, let students use manipulatives or draw pictures alongside the written problems. These regrouping into blocks of 10 worksheets work well as daily practice, homework, or a focused review activity.
What does this worksheet teach?
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These regrouping into blocks of 10 worksheets for 1st grade give students the structured, hands-on practice they need to build confidence and fluency. Students work through a range of problem formats, from visual models and diagrams to written equations and word problems, so they encounter regrouping into blocks of 10 from every angle. Each worksheet is designed to build on prior knowledge while introducing the level of challenge appropriate for 1st grade. Practicing regrouping into blocks of 10 at this stage strengthens the mathematical foundations that support more advanced concepts in later grades.
Can I use this regrouping into blocks of 10 worksheet for homeschool or classroom?
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Yes, both. We made it for 1st Grade base 10 blocks, and the page works the same whether it lands on a kitchen table or a center rotation. At home, most families go through it together and talk the answers out loud, and that talking is where most of the learning happens with regrouping into blocks of 10. In class it runs well as independent work while you pull a small group. Print one copy or thirty, whichever the day needs.
Why is regrouping into tens a foundational concept in 1st grade math?
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Understanding that 10 ones equal 1 ten is the conceptual core of regrouping in addition and subtraction, which students will use throughout elementary school.
How do physical base-ten blocks help students understand regrouping?
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Manipulating 10 unit cubes and exchanging them for a ten-rod makes the abstract trade concrete and reversible, building deep understanding.
At what point in 1st grade should regrouping-into-tens be introduced?
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After students are confident with counting objects to 20 and understand place value as tens and ones, usually mid-to-late first grade.
How many 1st Grade regrouping into blocks of 10 worksheets are there?
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1 printable worksheet, all free to preview. Downloads are included with a ClassWeekly free trial, and every page prints on standard 8.5 x 11 paper.
What age are regrouping into blocks of 10 worksheets for?
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These are written for 1st Grade students, roughly ages 6-7. Many teachers also use them a grade up for review or a grade down as an extension, so use the preview to judge the fit for a particular child.
Are these regrouping into blocks of 10 worksheets aligned to Common Core?
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Yes. Each one shows the Common Core code it covers on its own page, so you can check the alignment yourself rather than taking our word for it.
Can I use these regrouping into blocks of 10 worksheets for homeschool?
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Yes. Nothing here assumes a classroom of 25, so they work the same one-to-one at the kitchen table as they do in a 1st Grade classroom, a literacy centre, or a tutoring session.
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Worksheet Details
| Grade | 1st Grade |
| Subject | Math |
| Topic | Base 10 Blocks |
| Standard | 1.NBT.B.2 |
| Pages | 1 page |
| Difficulty | Medium |
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