3rd Grade Multi-digit Addition Worksheets and Activities

In this addition worksheet, students practice vertical addition by adding 3-digit numbers (with regrouping). Worksheet instructions: Find the sum for each addition problem.

In this addition worksheet, students practice adding 3-digit numbers in columns (without carrying or regrouping). Worksheet instructions: Find the sum for each addition problem.

This worksheet helps students practice adding 3-digit numbers in columns (without carrying or regrouping). Worksheet instructions: Find the sum for each addition problem.

This worksheet helps students practice adding two 2-digit numbers in columns (without carrying or regrouping). Worksheet instructions: Find the sum for each addition problem.

This worksheet helps students practice adding two 2-digit numbers in columns without carrying or regrouping. Worksheet instructions: Find the sum for each addition problem.

This worksheet is perfect for improving addition skills, and focuses on adding two 2-digit numbers in columns (with regrouping - also known as carrying). Worksheet instructions: Find the sum for each addition problem (with regrouping).

This worksheet is great for improving addition skills, and focuses on adding two 2-digit numbers in columns (with regrouping - also known as carrying). Worksheet instructions: Find the sum for each addition problem (with regrouping).

In this worksheet, the student needs to find the missing number in each problem. Missing addend exercises reinforce the concept of addition and are a great tool for practicing addition facts. Worksheet instructions: Find the missing number in each problem.

In this worksheet, students need to find the missing number in each 4-digit addition problem. Missing addend exercises reinforce the concept of addition and are a great tool for practicing addition facts. Worksheet instructions: Find the missing number in each problem.

In this worksheet, students need to find the missing number in each four-digit addition problem. Missing addend exercises reinforce the concept of addition and are a great tool for practicing addition facts. Worksheet instructions: Find the missing number in each problem.

Worksheet instructions: Find the sum for each problem below.

Worksheet instructions: Find the sum for each addition problem.

Worksheet instructions: Find the sum for each problem.

Worksheet instructions: Write the sum for each problem.

Worksheet instructions: Find the sum for each problem.

This word problems worksheet focuses on simple addition. Students are presented with real-life situations where they need to calculate the answers to word problems using addition. Worksheet Instructions: Read each problem carefully, then write your answers in the space provided.

This worksheet focuses on simple addition word problems. Students need to focus on solving real-life situations using addition. Worksheet Instructions: Read each problem carefully, then write your answers in the space provided.

This word problems worksheet focuses on simple addition. Students need to focus on solving real-life situations using addition. Worksheet Instructions: Read each problem carefully, then write your answers in the space provided.

Worksheet instructions: Add or subtract to find the missing number for each problem.

Worksheet instructions: Find the missing number for each problem. If both boxes are empty, fill in both numbers.

Worksheet instructions: Find the missing number for each problem. If both boxes are empty, fill in both numbers.

Worksheet instructions: Find the missing number for each problem. If both boxes are empty, fill in both numbers.

Worksheet instructions: Find the missing number for each problem. If both boxes are empty, fill in both numbers.

Worksheet instructions: Find the missing number for each problem. If both boxes are empty, fill in both numbers.

Worksheet instructions: Find the missing number for each problem. If both boxes are empty, fill in both numbers.