| A | B |
|---|
| a = a | reflexive property |
| If a=b, then b=a | symmetric property |
| If a=b and b=c, then a=c | transitive property |
| For any number a, a x 0= 0 x a = 0 | Multiplicative property of zero |
| For any number a, a + 0 = 0 + a = a | Additive identity property |
| For any number a, a x 1= 1 x a = a | Multiplicative identity property |
| For any numbers a and b, a + b=b + a and a x b=b x a | Commutative properties |
| For any numbers a, b, and c, (a + b) + c = a + (b + c) | Associative property |
| What is a formula? | An equation that states a rule for the relationship between certain quantities |
| Order of operations | Simplify expressions in the grouping symbols, evaluate all powers, do all multiplications and divisions from left to right, do all addition and subtraction from left to right |
| Variable | symbols used to represent unspecified numbers |
| Set | Collection of objects and numbers |
| Empty set | Set with no elements |
| Area of a triangle | A = 1/2 (bh) |
| Problem solving plan | Explore, plan, solve, examine |
| (3 +4) + 2 = 7 +2 | substitution property of equality |
| 5 x 6 - 3 x 5 = y | y = 15 |
| Solving an open sentence | find the replacements for the variable that make a sentence true |
| twice John's age decreased by 23 years | 2x - 23 |
| Simplest form | No like terms and no parenthesis |
