1. add
2. addend
3. additive identity property of 0
4. algorithm
5. array
6. associative property of addition
7. base-ten numeral form
8. base-ten numerals
9. commutative property of addition
10. commutative property of multiplication
2. addend
3. additive identity property of 0
4. algorithm
5. array
6. associative property of addition
7. base-ten numeral form
8. base-ten numerals
9. commutative property of addition
10. commutative property of multiplication