One Atta Time Flash Cards Distance Learning Create New Sheet Select a Worksheet > Version 1 Version 2 Version 3 Version 4 Version 5 Version 6 Version 7 Version 8 Version 9 Version 10 Grab 'em All Adding Multiple Addends (3 Addends Less than 20) (horizontal) 1oa2 Add three whole numbers (three addends) where each addend is less than 20Find the total sum of three addends with answers within 20