Lessons for 1.OA.A.1
Addition and subtraction problems in wordsStories whose structure decides which operation finds the missing amount.Lesson
Problems with the start, change or result missingStories that give a start and an end and ask what happened in between.Lesson
How many more and how many fewerStories that ask for the gap between two amounts.Lesson
Problems with the total missingStories that give both parts and ask for the whole.Lesson
Problems with the starting amount missingStories that give the change and the end and ask where things began.Lesson
Subtraction as the differenceHow much more one amount is than another.Lesson
Printable Worksheets
Problems with the start, change or result missing worksheet (PDF)Printable worksheet with answer keyPreview
How many more and how many fewer worksheet (PDF)Printable worksheet with answer keyPreview
Problems with the total missing worksheet (PDF)Printable worksheet with answer keyPreview
Problems with the starting amount missing worksheet (PDF)Printable worksheet with answer keyPreview
Subtraction as the difference worksheet (PDF)Printable worksheet with answer keyPreview