Finding the Missing Number Worksheet – 1st Grade Addition & Counting

The Finding the Missing Number Worksheet gives first grade students focused, no-prep practice with addition. It is a print-and-go math page that fits easily into a mini-lesson, a center rotation, or a quick review day.

Learning objective: Students will build accuracy and confidence with addition through short, focused practice that reinforces what was taught in class.

Why it works: Each page targets one skill, so students get meaningful repetition without feeling overwhelmed. The layout is clean and uncluttered, which helps young learners focus on the task instead of the decorations.

What's included:

• 1 printable worksheet page

• Clear, student-friendly directions

• Answer key (1 page)

• Cover page

How it's organized: The page opens with these directions: "Find the Missing Number What is the missing number? Write the number that makes each addition or subtraction sentence true." Students then complete the practice items in order and check their work before turning it in.

Grade level: Designed for first grade students. It also works well for kindergarten and second grade students who need extra practice or a fresh review.

How to use it: It is a great fit for morning work, learning centers, intervention groups, test review, homeschool lessons, and take-home practice.

Answer key: An answer key is included, so you can check work quickly or let students self-correct.

Teaching tips and variations:

• Send it home as homework so families can see what their child is learning in math.

• Project the page and solve one or two items as a class before students work on their own.

• Slip the page into a sheet protector so students can practice again with dry-erase markers.

Skills covered: Addition, Counting, Subtraction, Math

Standards: Supports Common Core 1. OA.C.6, 1. OA.A.1, 1. NBT.A.1.

File type: PDF, ready to print.

Number of pages: 3 (1 worksheet page, 1 answer key page, 1 cover page).

Looking for more addition practice? Visit the Have Fun Teaching shop for related worksheets, reading passages, and activities for first grade. Have Fun Teaching on Teach Simple