Missing Number Addition to 20 Worksheet

About This Worksheet

This worksheet presents a set of addition equations where one number is missing. Each problem includes a blank box that the child needs to fill in to make the equation correct. The sums in all problems are within 20, making it suitable for early learners.

Children look at each equation, understand the relationship between the numbers, and determine the missing value. The layout is clean and organized into sections, allowing students to focus on one problem at a time without distraction.

Learning Objectives

• Identify missing numbers in addition equations
• Understand number relationships within sums up to 20
• Apply basic addition reasoning to complete equations
• Build confidence in solving simple math problems

How to Use This Worksheet

• Ask the child to read each equation carefully before answering
• Encourage them to think about what number completes the sum
• Allow the use of fingers or counting tools if needed
• Review answers together to reinforce understanding

Skills Developed

addition skills, number sense, problem solving, logical thinking, early math reasoning