Printable One More, One Less Worksheet | Grade K Math

This kindergarten math worksheet provides targeted practice for identifying one more and one less than a given number. Across three pages and 36 problems, students will build number sense and fluency, solidifying their understanding of number relationships and the counting sequence.

At a Glance

• Grade: K · Subject: Math
• Standard: CCSS.MATH.CONTENT.K.CC.B.4.C — Understand that each successive number name refers to a quantity that is one larger.
• Skill Focus: One More, One Less
• Format: 3 pages · 36 problems · Answer key included · PDF
• Best For: Number sense intervention or independent practice.
• Time: 10–15 minutes

What's Inside

The PDF includes a three-page worksheet and a matching three-page answer key. Tasks are separated by concept ("one more" then "one less") before being combined. The clean layout allows students to work independently after initial guidance, making it an efficient tool.

Skill Progression

The worksheet follows a gradual release model to build student independence.

• Guided Practice: Page one isolates the concepts, asking students to find "one more" and "one less" in separate sections.
• Supported Practice: Page two repeats this format with new numbers, reinforcing the distinct skills and building student confidence.
• Independent Practice: The final page integrates the skills, requiring students to determine both one less and one more for each number.

This structure moves students from understanding to fluency.

Standards Alignment

This resource directly aligns with Common Core standard CCSS.MATH.CONTENT.K.CC.B.4.C, where students learn that each successive number name refers to a quantity that is one larger. It provides concrete practice for this core numeracy component. The standard code can be copied directly into lesson plans, IEP goals, or curriculum maps.

How to Use It

Use as independent practice after a lesson on number lines or as a small group intervention. For a quick formative assessment, observe if students are using fingers, a number line, or answering from memory. The activities can be completed in 10-15 minutes, making them a perfect station or warm-up task.

Who It's For

Designed for kindergarteners, this worksheet also suits advanced preschoolers or first-graders needing review. Its clear format benefits all learners, including those in special education. Pair it with a classroom number line or hands-on counting blocks to connect the abstract concept to physical objects.

Reinforcing the relationship between consecutive numbers is a critical early math skill, as outlined in standard CCSS.MATH.CONTENT.K.CC.B.4.C. This worksheet provides focused practice where students learn that each number name refers to a quantity that is one larger. Research consistently shows that number sense is a key predictor of later mathematical achievement. The RAND AIRS (2024) report on foundational math skills highlights that frequent, targeted practice on core concepts like cardinality leads to significant gains. By completing these tasks, students internalize the number system’s structure, a competency that underpins all future arithmetic. This understanding is essential for building mathematical fluency and confidence.