Halloween Edition Second Grade Common Core Math 2 OA.2 Fluently Add & Subtract Within 20 2.OA.2 Practice provides two ways for students to practice and show mastery of their ability to use mental math to fluently apply addition and subtraction skills.
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 2.OA.2 Add and subtract within 20.
2. Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.