CCSS 2.NBT.8 Worksheets
CCSS 2.NBT.8 (Common Core, 2nd Grade): "Mentally add 10 or 100 to a given number 100-900, and mentally subtract 10 or 100 from a given number 100-900." The worksheets below practice this standard. Each one is a free printable PDF with an answer key, comes in multiple versions, and can also be assigned digitally - no login or account needed.
