3-Digit Addition Worksheets

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  2. Number Sense >
  3. Addition >
  4. 3-Digit

Are you looking for ways to boost up three-digit addition? Our printable 3-digit addition worksheets are the right place. Work your way through the addition sums featuring 3-digit addends. The wide range of exercises, including finding the sum with or without regrouping, circling the numbers, identifying the missing digits, grid addition, line-up addition, and word problems, will help children solve addition problems within 1,000 in a jiffy! Explore our free worksheets for a sneak-peek into what lies in store!

Exclusive 3-Digit Addition Worksheets

Adding 3-Digit Numbers | With Regrouping

Adding 3-Digit Numbers | With Regrouping - 1 PDF 1
Worksheet 1
Answer Key
Adding 3-Digit Numbers | With Regrouping - 2 PDF 2
Worksheet 2
Answer Key
Adding 3-Digit Numbers | With Regrouping - 3 PDF 3
Worksheet 3
Answer Key

Grid Addition | 3-Digit Numbers

Grid Addition | 3-Digit Numbers - 1 PDF 1
Worksheet 1
Answer Key
Grid Addition | 3-Digit Numbers - 2 PDF 2
Worksheet 2
Answer Key
Grid Addition | 3-Digit Numbers - 3 PDF 3
Worksheet 3
Answer Key

Interactive Worksheets | Assign Digitally

Adding 10 or 100 to the Multiples of 100 Adding 10 or 100 to the Multiples of 100 Online Worksheet 1
3-digit Addition without Regrouping 3-digit Addition without Regrouping Online Worksheet 2
Adding Three-Digit Numbers Adding Three-Digit Numbers Online Worksheet 3
Adding 3-Digit Numbers | Missing Digits Adding 3-Digit Numbers | Missing Digits Online Worksheet 4
Hundred More and Hundred Less Hundred More and Hundred Less Online Worksheet 5
Adding up to Four 3-Digit Numbers Adding up to Four 3-Digit Numbers Online Worksheet 6

Exclusive 3-Digit Addition Worksheets for Premium Members

Adding 3-Digit Numbers | Without Regrouping

Adding 3-Digit Numbers - Without Regrouping

Adding 3-Digit Numbers

Adding 3-Digit Numbers

Adding Tens and Hundreds

Adding Tens and Hundreds

Circling the Numbers

Circling the Numbers

Decoding the Riddle

Decoding the Riddle

Line-Up Addition | 3-Digit Numbers

Line-Up Addition - 3-Digit Numbers

Finding the Missing Digits

Finding the Missing Digits

Related Printable Worksheets

▶ 2-Digit Addition

▶ 4-Digit Addition