Count objects and write the number (1-20)

Written by Adi Ackerman, Head Teacher

"Count objects and write the number (1-20)" is written for 1st Grade (Ages 6-7), and it covers Common Core 1.NBT.A.1. If your little one is a year younger but already steady on number charts & counting, the page still works. You may just need to read the instructions out loud. And if they are older and count objects and write the number (1-20) never quite stuck, this is a short review rather than busywork.

Popular with 1st Grade teachers · Downloaded 431 times
Hover to zoom
Count objects and write the number (1-20)
Count objects and write the number (1-20)

Count the objects in each box up to 20 and write the total on the line Part of our count objects and write the number (1-20) number charts & counting 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 count objects and write the number (1-20) worksheets work well as daily practice, homework, or a focused review activity.

What students will practice

  • Students will recognize and apply count objects and write the number (1-20) concepts using number lines, ten-frames, and drawn models.
  • Students will solve problems involving count objects and write the number (1-20) with increasing accuracy and confidence.
  • Students will connect count objects and write the number (1-20) skills to real-world situations and explain their reasoning clearly.


Curriculum Links

Common Core State Standards

Number and Operations in Base Ten · 1st Grade

1.NBT.A.1

Standard: Count to 120, starting at any number less than 120. In this range, read and write numerals and represent a number of objects with a written numeral.

View all 1.NBT.A.1 worksheets →

Find this in the curriculum

Browse the grade, subject, and topic this belongs to.

FAQ

How do I use this count objects and write the number (1-20) 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 count objects and write the number (1-20) worksheets work well as daily practice, homework, or a focused review activity.

What does this worksheet teach?

⌄

These count objects and write the number (1-20) 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 count objects and write the number (1-20) from every angle. Each worksheet is designed to build on prior knowledge while introducing the level of challenge appropriate for 1st grade. Practicing count objects and write the number (1-20) at this stage strengthens the mathematical foundations that support more advanced concepts in later grades.

Can I use this count objects and write the number (1-20) worksheet for homeschool or classroom?

⌄

Yes, both. We made it for 1st Grade number charts & counting, 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 count objects and write the number (1-20). In class it runs well as independent work while you pull a small group. Print one copy or thirty, whichever the day needs.

Why are teen numbers particularly tricky when counting objects to 20?

⌄

Teens require students to track larger groups and write two-digit numerals, adding cognitive load compared to single-digit counting tasks.

What strategies help students accurately count scattered objects up to 20?

⌄

Teaching students to cross off or circle each object as they count prevents double-counting and builds systematic counting habits.

How does this skill connect to addition within 20, a key 1st grade standard?

⌄

Once students can reliably count 20 objects, they develop the number sense needed to decompose and add numbers within that range.

What counting skills should a first grader have?

⌄

First graders should count to 120 starting from any number, read and write numerals to 120, and understand that the two digits of a two-digit number represent tens and ones (CCSS 1.NBT.A.1, 1.NBT.B.2). They should also skip count by 2s, 5s, and 10s.

How do number charts help first graders learn math?

⌄

A hundred chart helps students see number patterns, practice skip counting, and understand place value visually. Students can color patterns (every 5th number, every 10th number), find missing numbers, and see how numbers increase by rows and columns.

What is skip counting and why is it important in first grade?

⌄

Skip counting means counting by a number other than 1 (by 2s: 2, 4, 6, 8 or by 5s: 5, 10, 15, 20). It builds the foundation for multiplication and helps students count money and tell time. Number chart worksheets where students highlight skip counting patterns make this concept visual.

Ratings & Reviews

No reviews yet. Be the first to share what you think.

Reviews are for ClassWeekly members.

Make a Request

Spotted something to fix, or want a worksheet we don't have yet? Tell us and we'll make it.

Worksheet Details

Grade1st Grade
SubjectMath
TopicNumber Charts & Counting
Standard1.NBT.A.1
Pages1 page
DifficultyMedium

What is ClassWeekly?

ClassWeekly offers free worksheets and printable learning resources for kids in preschool to grade 5. All worksheets are aligned to Common Core, NGSS, and C3 Framework standards and designed by educators. Become a member to access the full library and download unlimited PDFs.