Find Result +/-

Finds results for Join, Result Unknown problems ("You had 3 apples and get 3 more, how many do you have in all?"), Separate, Result Unknown ("You had 8 apples and ate 3, how many do you have left?"), and Part–Part–Whole, Whole Unknown ("There are 6 girls and 5 boys on the playground, how many children were there in all?") problems by direct modeling, counting all, with objects.


You may see this:

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Other Examples:

  • Asked, "You have 6 balls and get 2 more. How many in all?" counts out 6 balls, then adds 2, then counts all 8.
    • (join, result unknown problem)
  • Asked, "You have 2 red balls and 3 blue balls. How many in all?" counts out 2 red, then counts out 3 blue, then counts all 5.
    • (part-part-whole, whole unknown problem)
  • Asked, "You have 5 balls and give 2 to Tom. How many do you have left?" counts out 5 balls, then takes away 2, and then counts remaining 3.
    • (separate, result unknown problem)

Help your student become a(n) Find Result +/-

These activities challenge children to solve problems where the result is unknown ("typical" addition and subtraction situations such as 3 + 6 = _ or 9 - 3 = _ ) using objects, including fingers, and counting all.

Special Thanks To

Institute of Education Sciences
The research reported here was supported by the Institute of Education Sciences, U.S. Department of Education, through grant numbers R305K050157, R305A120813, R305A110188, and R305A150243. to the University of Denver. The opinions expressed are those of the authors and do not represent views of the Institute or the U.S. Department of Education.