Missing Numbers Worksheet 1-100

Hundred-square worksheets with scattered numbers left blank for students to fill in, in three versions that each use a different missing-number pattern.
Year groups
Nursery–Reception (Early Years), Years 1–3 (Key Stages 1–2)
Pages
3
File type
PDF
Preparation
Print ready

Updated Jan 09, 2026

Subject
Patterns, Subtraction, Addition, Addition and Subtraction, Numbers, Early Math, Maths
Topic
Missing Number 1 to 100, Missing Numbers 1-100 Worksheets for Year 1
Resource types
Worksheets
Preparation
Print ready

From the author

About this resource

Missing Numbers 1-100 exercises help teach children the fundamentals of mathematics and how to perform basic arithmetic operations like addition and subtraction. These activities encourage students to discover the missing numbers in a pattern and complete it with the correct number. Missing Numbers exercises focus on enhancing students' mental abilities and improving their mental counting skills, as well as helping them develop logical thinking and problem-solving skills.

To make these exercises fun and beneficial for children, we have designed these activities in an engaging and unique way that motivates students to practise without getting bored. These activities are suitable for different age groups, from Year 1 to the early primary years.

These activities include three worksheets, each containing different data and numbers suitable for various year groups and age groups, such as Nursery, Year 1, Year 2, and more. These activities can also be used for homeschooling or as an extracurricular activity to improve students' performance, enhance their mental and cognitive abilities, and strengthen their counting skills. This file is available in a printable, high-quality PDF format.

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In the classroom

Teaching tips & learning objectives

Learning objectives

  • Fill in missing numbers in a 1-100 sequence

  • Use patterns in the hundred square to find unknown numbers

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