Make subtraction less intimidating and more engaging with these Subtraction Within 20 1st Grade Worksheets! Designed with a fun Monster Theme, this packet helps students master subtraction strategies using a number line as a visual aid.

Transitioning from simple subtraction to equations that "cross ten" can be challenging. These worksheets provide the visual support needed to build math fluency & drills effectively. Whether used for independent Practice, bell ringers, Morning Work, or homework, this resource is perfect for Grade 1 learners and serves as an excellent intervention tool for 2nd Grade (review).

✨ What’s Included:

This 100-page packet (50 Worksheets + 50 Answer Keys) is strategically scaffolded to guide students through 5 levels of subtraction mastery:

• 10 Pages: Counting Back Strategy (Teen - Single Digit)
  Focus: Simple subtraction with no regrouping (e.g., 16 - 4). Builds confidence first!
• 5 Pages: Back to Ten Strategy (Subtracting to 10)
  Focus: Reinforcing place value by solving equations that result in 10 (e.g., 15 - 5).
• 10 Pages: Crossing Ten Strategy (The Challenge!)
  Focus: Step-by-step practice for tricky problems that bridge across ten (e.g., 13 - 5).
• 10 Pages: Finding the Difference (Teen - Teen Number)
  Focus: Solving equations with two-digit numbers (e.g., 19 - 17) by seeing the difference or counting up.
• 15 Pages: Mixed Subtraction Practice
  Focus: A comprehensive review of all strategies combined to test mastery.
• Visual Number Lines (0-20): Included on every single problem to prevent errors.
• Answer Keys: Full keys included for quick and easy grading.

Skills Covered:

• Subtraction Within 20: Fluently subtracting numbers up to 20.
• Number Line Strategy: Using visual tools to count back or find the difference.
• Counting Back: Basic subtraction proficiency.
• Bridging/Crossing Ten: Strategies for breaking down numbers to subtract past 10.
• Place Value: Understanding the relationship between teen numbers and 10.

Perfect For:

• Morning Work & Warm-ups
• Math Centers & Stations
• Homework Practice
• Intervention (RTI) for struggling students
• Assessment / Quiz

Common Core Standards:

• 1.OA.C.6: Add and subtract within 20, demonstrating fluency.
• 1.OA.C.5: Relate counting to addition and subtraction (e.g., by counting back).

Simply print and go! No prep required. Help your students master Subtraction Within 20 with these effective, skill-building worksheets.

❤️ You Might Also Like:

Addition Within 20 Number Line Worksheets

Mixed Addition & Subtraction Within 20 Number Line Worksheets

Missing Numbers Mixed Add & Sub Within 20 Number Line Worksheets

TERMS OF USE:

For educational use only. This resource is for personal, classroom, or single-teacher use. Please do not share, post online, or redistribute this file in any form.

© Alista Creations • Learn · Create · Inspire

All rights reserved. This resource is designed by Alista Creations and may not be redistributed or claimed as your own.