First Grade Common Core Math - Determine If Equations Are True Or False 1.OA.7 PDF Provides five assessments for students to show mastery of their ability to determine if equations involving addition and subtraction are true or false.It includes 40 distinct problems in 5 assessments with answer keys for all 5. The PDF is viewable on all types of devices and is easy to print. Take a look at the preview file and buy today for your students benefit!Standard 1 OA.7 Work with addition and subtraction