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Skills Covered

  • Compare numbers using >, <, and = symbols
  • Order numbers from least to greatest
  • Identify number patterns and sequences
  • Build number sense and magnitude understanding
  • Develop logical reasoning skills
  • Strengthen sequential thinking

How to Use This Worksheet

Write the number that comes just before or just after each given number. Numbers within 20.

Tips for Success

  • Use a number line to verify comparisons
  • Teach the "alligator mouth" trick for greater than / less than
  • Start with concrete objects before moving to abstract numbers
  • Have students explain why one number is greater or less

Common Core Standards Alignment

This worksheet supports the following Common Core State Standards for Mathematics:

  • K.CC.B.4c Know that each next number in the count stands for a group with one more object.

© Copyright 2010. National Governors Association Center for Best Practices and Council of Chief State School Officers. All rights reserved.

Before & After to 20

K – 1st Grade

Write the number that comes just before or just after each given number. Numbers within 20.

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What’s Included

  • 5 worksheet pages
  • Answer keys included
  • Grade level: K - 1st
  • Category: Comparing & Ordering
  • Print-ready PDF format
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