1.OA.8.Determine+the+unknown+whole+number+in+an+addition+or+subtraction+equation+relating+to+three+whole+numbers

//Click on the "Edit this page" or it may say just "EDIT" button and add your lesson idea below the last lesson listed. Please respect others and if you decide to add additional ideas to an existing lesson indent and put it below the original idea. You can also upload lesson plans and worksheets by clicking on the "File" button. If you want to link to a website, type a title, highlight it and click on the "LINK" button//

Operations and Algebraic Thinking 1.OA 8.Determine the unknown whole number in an addition or subtraction equation relating to three whole numbers. //For example, determine the unknown number that makes the equation true in each of the equations 8 + ? = 11, 5 = // 􀃍 //– 3, 6 + 6 = // 􀃍

List of resources: http://www.k-5mathteachingresources.com/1st-grade-number-activities.html