This Fill the Missing Numbers worksheet introduces a greater challenge by combining a wider number range with three missing numbers in each sequence.
Children look at each sequence and fill in the missing numbers to complete the row correctly.
This page encourages deeper thinking and supports children who are ready to move beyond basic sequencing.
What’s Included in This Worksheet
This challenge worksheet is designed for confident learners and includes:
- Five number sequences, each containing six numbers
- Three missing numbers in every sequence
- Number ranges that span 1–20
- Mixed blank positions to increase difficulty
- A clean, uncluttered layout for focused problem solving
Each problem requires children to analyze number order carefully and hold multiple values in mind.
How to Use This Worksheet
Instruction:
Fill in the missing numbers.
Helpful tips for adults:
- Encourage children to read the sequence aloud
- Ask which numbers are missing between visible numbers
- Allow counting forward or backward as needed
- Support problem solving rather than speed
This worksheet works well with pencils or crayons and supports focused, independent math practice.
Skills This Worksheet Supports
Completing this worksheet helps children strengthen:
- Number order and sequencing
- Understanding of numbers 1–20
- Logical thinking
- Working memory
- Visual scanning
- Attention and focus
These skills are important for later math topics such as addition, subtraction, and mental math.
Why Challenge Pages Are Important
Including challenge pages allows children to apply what they have learned without introducing new concepts.
This builds confidence, supports problem solving, and keeps learning engaging for older or more advanced learners.
This worksheet provides that challenge in a clear and structured 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 math 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 number sequencing from 1 to 20 through thoughtful, hands on learning.
Explore more printable math worksheets in our Counting Activities Collection.
