This page contains all our printable worksheets in section **Addition - 3 Digits** of **Second Grade Math**. As you scroll down, you will see many worksheets for **add on multiples of hundreds**, **add three digit numbers**, **addition sentences/equations**, **input/output tables**, **regroup ones / regroup tens**, **word problems**, **estimate sums**, and more.

A brief description of the worksheets is on each of the worksheet widgets. Click on the images to view, download, or print them.
All worksheets are **free** for individual and non-commercial use.

View the full list of topics for this grade and subject categorized by common core standards or in a traditional way.

Round the numbers to the nearest 100, then add the two rounded numbers.

Category: **
Addition and Subtraction - 3 Digits Add-Subtract Multiples of Hundreds **

Practice subtraction with multiples of 100.

Category: **
Addition and Subtraction - 3 Digits Add-Subtract Multiples of Hundreds **

Estimate each difference.

Category: **
Addition and Subtraction - 3 Digits Add-Subtract Multiples of Hundreds **

Round the numbers to the nearest 100.Then subtract to get the answer.

Category: **
Addition and Subtraction - 3 Digits Add-Subtract Multiples of Hundreds **

Count on by hundreds to add multiples of 100.

Category: **
Addition and Subtraction - 3 Digits Add-Subtract Multiples of Hundreds **

Count on hundreds to add.

Category: **
Addition and Subtraction - 3 Digits Add-Subtract Multiples of Hundreds **

Practice three digit addition with regrouping ones.

Category: **
Addition and Subtraction - 3 Digits Regroup Ones / Regroup Tens **

Add three digit numbers with regrouping ones.

Category: **
Addition and Subtraction - 3 Digits Regroup Ones / Regroup Tens **

Add 3-digit numbers with regrouping.

Category: **
Addition and Subtraction - 3 Digits Regroup Ones / Regroup Tens **

Follow the rule to complete each function table.

Category: **
Addition and Subtraction - 3 Digits Input/Output Tables **

Follow the subtraction rule to complete the function tables.

Category: **
Addition and Subtraction - 3 Digits Input/Output Tables **

Complete the function tables.

Category: **
Addition and Subtraction - 3 Digits Input/Output Tables **

Complete the function tables. ( 3 - digit addition )

Category: **
Addition and Subtraction - 3 Digits Input/Output Tables **

Practice adding numbers up to 3 digits.

Category: **
Addition and Subtraction - 3 Digits Practice with Three Digit Numbers **

Practice 3 - digit subtraction. ( with regrouping )

Category: **
Addition and Subtraction - 3 Digits Practice with Three Digit Numbers **

Fill in the missing numbers to complete the addition sentences.

Category: **
Addition and Subtraction - 3 Digits Addition Sentences/Equations **

Find the missing number to complete each addition sentence.

Category: **
Addition and Subtraction - 3 Digits Addition Sentences/Equations **

Write the missing number that makes each addition equation true.

Category: **
Addition and Subtraction - 3 Digits Addition Sentences/Equations **

Balance each addition equation by filling in the missing number.

Category: **
Addition and Subtraction - 3 Digits Addition Sentences/Equations **

Read and solve the word problems.

Category: **
Addition and Subtraction - 3 Digits Word Problems **

Read and solve the word problems.

Category: **
Addition and Subtraction - 3 Digits Word Problems **