Given a two-digit number, mentally find 10 more or 10 less than the number, without having to count; explain the reasoning used.
Standard detail
M-1-4C-2
Depth 2Parent ID: 1629DA7FD03B4DCC87FF18C4F72C2333Standard set: 1st Grade
Original statement
Quick facts
- Statement code
- M-1-4C-2
- List ID
- ii
- Standard ID
- 8A5C1E628ABE491CA326F7A0154A7C00
- Subject
- Math
- Grades
- 01
- Ancestor IDs
- 1629DA7FD03B4DCC87FF18C4F72C233318D1E0E321C64393BC4FB056ACBAEDB0
- Source document
- Diocese of Joliet Standards
- License
- CC BY 4.0 US