1. Directions: Write TRUE if the statement is correct and FALSE if not.
1.5 + 0 = 5. O is the identity element.
2. For any three elements x, y, z in S. (* * y) + z = x + (y * z), the operation * is
said to be associative.
3. Commutative property is also true to subtraction.
4. x + y = y * x is an example of commutative property.
5. The additive inverse of 7 is -7.
6. If an element b in S is such that a + b = b + a = i, then this element is called the
inverse of a and (a, b) is called an reverse pair.
7. Mathematical system is a structure formed from undefined objects only.
8. Descriptions explain the meaning of concepts that relateto something.
9. A mathematical system consists of a set elements.
10. Theorems are assertions about the properties of the universe and rules for
creating and justifying more assertions.

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