Addition of Numbers within 100 2nd Grade Math Worksheets

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Addition is the process of combining two or more numbers (or things) together to make a new total or sum. This worksheet contains concepts and procedures in adding numbers within 100.

The numbers to be added together are called “addends”. The answer is called “sum”.


In adding two-digit numbers, you might encounter two ways to do it: with regrouping or without regrouping.

Two- digit numbers are numbers starting with 10 and higher. It is composed of tens and ones. Examples : 21, 11, 10, 15, 87, 99.

Regrouping is the way of creating groups of tens when adding or subtracting two digit numbers (or more). Another names for it are “carrying” and “borrowing”.

Addition of Numbers within 100 Worksheets

This is a fantastic bundle which includes everything you need to know about Addition of Numbers within 100 across 15+ in-depth pages. These are ready-to-use Common core aligned Grade 2 Math worksheets.

Each ready to use worksheet collection includes 10 activities and an answer guide. Not teaching common core standards? Don’t worry! All our worksheets are completely editable so can be tailored for your curriculum and target audience.

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