---
title: "K.NR.1: Numbers and Cardinality to 20 (Georgia Mathematics standard)"
code: K.NR.1
cite_as: Georgia Standards of Excellence, Mathematics, K.NR.1
subject: math
grades:
  - kindergarten
language: en
canonical_url: https://georgiahomeroom.org/standards/code/K.NR.1
md_url: https://georgiahomeroom.org/standards/code/K.NR.1.md
alternate_language_url: https://georgiahomeroom.org/es/standards/code/K.NR.1.md
source_url: https://case.georgiastandards.org/ims/case/v1p1/CFDocuments/e9dd7229-3558-4df2-85c6-57b8938f6180
source_last_changed: 2024-10-09
data_built: 2026-09-18
publisher: Georgia Homeroom, a free public-interest project of Georgia Civic Data. Not affiliated with or endorsed by the Georgia Department of Education or any school district.
up: https://georgiahomeroom.org/standards/math/kindergarten.md
index: https://georgiahomeroom.org/standards/index.md
---

# K.NR.1: Numbers and Cardinality to 20

Demonstrate and explain the relationship between numbers and quantities up to 20; connect counting to cardinality (the last number counted represents the total quantity in a set).

- Subject: Mathematics
- Appears in: Kindergarten, https://georgiahomeroom.org/standards/math/kindergarten.md

## Expectations

- **K.NR.1.1**: Count up to 20 objects in a variety of structured arrangements and up to 10 objects in a scattered arrangement.
- **K.NR.1.2**: When counting objects, explain that the last number counted represents the total quantity in a set (cardinality), regardless of the arrangement and order.
- **K.NR.1.3**: Given a number from 1-20, identify the number that is one more or one less.
- **K.NR.1.4**: Identify pennies, nickels, and dimes and know their name and value.

## Georgia Milestones coverage

No Georgia Milestones blueprint cites this standard.

## The same standard across grades

- **Kindergarten, K.NR.1 (this standard)**: Demonstrate and explain the relationship between numbers and quantities up to 20; connect counting to cardinality (the last number counted represents the total quantity in a set).
- Grade 1, 1.NR.1: Extend the count sequence to 120. Read, write, and represent numerical values to 120 and compare numerical values to 100. https://georgiahomeroom.org/standards/code/1.NR.1.md
- Grade 2, 2.NR.1: Using the place value structure, explore the count sequences to represent, read, write, and compare numerical values to 1000 and describe basic place-value relationships and structures. https://georgiahomeroom.org/standards/code/2.NR.1.md
- Grade 3, 3.NR.1: Use place value reasoning to represent, read, write, and compare numerical values up to 10,000 and round whole numbers up to 1,000. https://georgiahomeroom.org/standards/code/3.NR.1.md
- Grade 4, 4.NR.1: Recognize patterns within the base ten place value system with quantities presented in real-life situations to compare and round multi-digit whole numbers through the hundred-thousands place and compare decimal numbers to the hundredths place. https://georgiahomeroom.org/standards/code/4.NR.1.md
- Grade 5, 5.NR.1: Use place value understanding to solve real-life, mathematical problems. https://georgiahomeroom.org/standards/code/5.NR.1.md
- Grade 6, 6.NR.1: Solve relevant, mathematical problems involving operations with whole numbers, fractions, and decimal numbers. https://georgiahomeroom.org/standards/code/6.NR.1.md
- Grade 7, 7.NR.1: Solve relevant, mathematical problems, including multi-step problems, involving the four operations with rational numbers and quantities in any form (integers, percentages, fractions, and decimal numbers). https://georgiahomeroom.org/standards/code/7.NR.1.md
- Grade 8, 8.NR.1: Solve problems involving irrational numbers and rational approximations of irrational numbers to explain realistic applications. https://georgiahomeroom.org/standards/code/8.NR.1.md

Source: Georgia Standards of Excellence, published by the Georgia Department of Education at case.georgiastandards.org.