Christmas Edition Second Grade Math - 2 NBT.8 Mentally Add or Subtract 10 or 100 Practice provides two ways for students to practice and show mastery of their ability to understand subtraction as an unknown-addend problem. 2.NBT.8
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.NBT.8 Use place value understanding and properties of operations to add and subtract.
8. Mentally add 10 or 100 to a given number 100–900, and mentally subtract 10 or 100 from a given number 100–900.