- digit - even/odd - whole numbers
- sequence - standard form - written form
- expanded form - symbol - addends
- algorithm - sum - missing addends
- commutative property of addition - horizontal
- identity property of addition - align
- ordinal numbers - position - insert
- difference - fact family - inverse operations
- exact - equation - substitute
- original problem- solving problem - check problem
These are terms we used or discussed through the 2nd week of school. I will post more soon.
Can you tell me the type of number "2nd" is?