Across
- 3. _____ is identity for addition of whole numbers
- 7. Identify this property (5+4)+9 = 5+(4+9)
- 8. Identify this property 8(9+4)
- 9. division by _____ is not defined
- 11. 20-(10-3+2)
Down
- 1. The numbers 0,1,2,3 form the collection of
- 2. Identify this property 2+4=4+2
- 4. ____ is distributive over addition for whole numbers
- 5. natural numbers start from
- 6. the numbers 1,2,3 form the collection of
- 10. whole numbers start from