Add and subtract 3-Digit numbers with & without regrouping

UK National Curriculum. 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

This is a no frills set of Worksheets providing 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 standard algorithm.

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.

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.

• 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

This will give you a choice of differentiating from the very start, or setting the level of work for the whole class.

A choice of formats

1. All the sets worksheets listed above come in 2 formats
   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.

(almost) Unlimited Worksheets ?
Yes ! 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 before moving on to 3-digits, etc.

Answers are automatically generated every time.

No-Prep Worksheets
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.

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

You may also like:
Add and subtract 2-digit numbers with & without regrouping
or
Add, Subtract 2 and 3-Digit Numbers formal and informal BUNDLE