Add, subtract 3-digit numbers with/ without regrouping – Formal Method

This set of no frills worksheets provides an (almost) endless source of practicing column addition and subtraction of two, three or four 3-Digit numbers, differentiated to help introduce regrouping using the formal method.

The first set of worksheets has adding & subtracting a 2-digit number from a 3-digit number can serve as a useful interim step between adding & subtracting 2-digit numbers and adding & subtracting 3-digit numbers. It helps bridge the gap between these two levels of difficulty and provides a valuable transition in the learning process.

 Add a 3-Digit and a 2-Digit number & Subtract a 2-Digit from a 3-Digit number

This preliminary set of worksheets serves as a useful interim step between adding & subtracting 2-digit numbers and adding & subtracting 3-digit numbers. It helps bridge the gap between these two levels of difficulty and provides a valuable transition in the learning process.

• No regrouping
• Regrouping I – Units only
• Regrouping II -Units and tens

Add two 3-Digit numbers

• Regrouping I – Units only
• Regrouping II -Units and tens
• Regrouping III -Units, tens and hundreds

Add more than two 3-Digit numbers

• Adding three 3-Digit numbers
• Adding four 3-Digit numbers

 Subtraction with two 3-Digit numbers

• No regrouping
• Regrouping I – Units only
• Regrouping II – Units and tens

All the sets worksheets listed above come in 2 formats

1. The questions are laid out ready to work on with the numbers in the vertical format and the answer line ready to fill in.
2. The questions are presented in the horizontal format so that your students have to properly align the digits based on their place values, which is essential for accurate addition & subtraction. This practice reinforces the concept of place value and helps students develop a better understanding of how digits in different positions represent different values.

(almost) Unlimited Worksheets ?

At the click of a button all numbers are randomized, and will therefore change every time so you can create as many different worksheets for classwork, homework, revision, preparing for assessment, review etc.

These are straightforward no-prep worksheets that require no extra work. Simply CLICK-PRINT AND GO. This makes them ideal to have printed and ready for a replacement teacher if needed. 

Answers are automatically generated every time.

Note: These resources work with the official Adobe Acrobat Reader on Windows or Mac computers.

UK National Curriculum – Key Stage 2- Year 3 Programme of Study – Number – Addition and Subtraction 
Add and subtract numbers with up to three digits, using formal written methods of columnar addition and subtraction