Appendix B: Nine Rules of Arithmetic
Properties of Addition:
1. Commutative Property of Addition
a+b = b+a
2. Associative Property of Addition
a+(b+c) = (a+b)+c
3. Additive Inverse Property
a+(-a) = 0
4. Additive Identity Property
a+0 = a
Properties of Multiplication:
1. Commutative Property of Multiplication
axb = bxa
2. Associative Property of Multiplication
(a x b) x c = a x (b x c)
3. Multiplicative Inverse Property
ax(1/a) = 1
4. Multiplicative Identity Property
ax1 = a
5. Distributive Property
a(b+c)=ab+ac
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