The word "addend" refers to a number that is added to another number in an addition equation. It's one of the numbers being added together. Full definition
Adding Doubles with Dots Addition Worksheets Vertical Format - 2 Addends These addition worksheets may be configured for adding doubles, double + 1, and double + 2 addition number sets in a vertical format. (math-aids.com)
Below are six versions of our grade 4 addition worksheet on adding whole hundreds; students must find the missing addend in each equation. (k5learning.com)
Below are six versions of our grade 4 math worksheet on finding the missing addend from a 5 - digit number written in expanded form. (k5learning.com)