This Fill the Missing Letters worksheet introduces a greater challenge by using uppercase letter sequences across the full alphabet (A–Z) with three missing letters in each row.
Children analyze each sequence and fill in the missing letters to complete it correctly.
This page is designed for learners who are ready to apply their alphabet knowledge with increased independence.
What’s Included in This Worksheet
This challenge worksheet includes:
- Five uppercase letter sequences
- Six letters per sequence
- Three missing letters in every row
- Letter ranges spanning A–Z
- Varied blank positions to encourage deeper thinking
- A clean, uncluttered layout for focused problem solving
Each problem requires children to hold multiple letter positions in mind at once.
How to Use This Worksheet
Instruction:
Fill in the missing letters.
Helpful tips for adults:
- Encourage children to look at the entire sequence first
- Ask which letters are already known
- Support children in thinking through the order step by step
- Focus on reasoning rather than speed
This worksheet works well with pencils or crayons and supports independent literacy practice.
Skills This Worksheet Supports
Completing this worksheet helps children strengthen:
- Alphabet sequencing
- Understanding of the full alphabet
- Logical thinking
- Working memory
- Visual attention
- Problem solving confidence
These skills support early spelling, reading fluency, and writing development.
Why Full Alphabet Practice Is Important
Working with the full alphabet helps children see letter order as a complete system.
Including three missing letters encourages careful thinking and prevents reliance on memorized patterns.
This worksheet provides that challenge in a clear and supportive way.
Who This Worksheet Is For
This worksheet is suitable for:
- Kindergarten students
- Early primary learners
- Confident preschoolers ready for a challenge
- Homeschool learning
- Classroom literacy centers
Numbered worksheets allow children to complete pages in any order and revisit them as needed.
Download the free PDF below and help your child practice advanced uppercase letter sequencing through thoughtful, hands on learning.
Explore more printable alphabet worksheets in our Alphabet Activities Collection.
