Three Addends Worksheet – 3rd Grade Addition Practice + Answer Key

Build strong addition skills with the Three Addends Worksheet. This third grade math printable keeps the focus on one skill so students can practice it with confidence.

Learning objective: Students will review addition, practice it in context, and show what they know in a way that is easy for the teacher to check.

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

• 2 practice sections (Part A to Part B)

• Answer key (1 page)

• Cover page

How it's organized: The page opens with these directions: "Add the three numbers in each problem. Start with the ones column and regroup when a column passes nine." The practice is split into 2 parts, so students can work through it in clear steps.

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

How to use it: Use it for whole-group practice, small-group instruction, independent work, centers, morning work, homework, or an emergency sub plan.

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

Teaching tips and variations:

• Model the first item together, then let students finish the rest independently.

• Use it as an exit ticket the day after a addition lesson to see who needs more support.

• Pair students to compare answers and talk through any differences.

Skills covered: Addition, Math

Standards: Supports Common Core 3. NBT.A.2.

File type: PDF, ready to print.

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

This printable is part of the Have Fun Teaching collection of math resources for elementary classrooms and homeschools. Visit our shop for more practice pages on related skills. Have Fun Teaching on Teach Simple