Common Core State Standards (1.NBT.C.5) - Mentally Find 10 More. Use the sum of the tens digits and the ones digit of the number other than 10.
Timestamps:
00:00 Intro
00:15 Mentally Add 25 + 10
00:42 Mentally Add 36 + 10
01:00 Mentally Add 57 + 10
Sign up to get updates from us
