1.OA.4 Christmas Edition First Grade Common Core Math 1 OA.4 Subtraction As An Unknown-Addend Problem Practice provides two ways for students to practice and show mastery of their ability to understand subtraction as an unknown-addend problem.
Problems are unique from other sets I offer!
It includes 20 distinct problems in two sets (67 slides in all!), with and without following answer slides and now Student Answer Sheet and matching Answer Key. The PowerPoint file can be used on computers, or Promethean and Smart boards.
Take a look at the preview file and buy today for your students benefit!
Standard 1.OA.4 Understand and apply properties of operations and the relationship between addition and subtraction.
4. Understand subtraction as an unknown-addend problem. For example, subtract 10 – 8 by finding the number that makes 10 when added to 8.