Senior High Math – Pub

OPERATIONS WITH RATIONAL NUMBERS (a) Addition and Subtraction Use a common denominator. Example LCM of 3 and 6 = 6 (b) Multiplication Multiply numerators and denominators. Example (c) Division Multiply by the reciprocal. Example  

What are Rational Numbers? A rational number is any number that can be written in the form: p = numerator q = denominator Examples (a) (b) (c) (d) Not Rational (i) (ii) (iii) (recurring without pattern) Types of Rational Numbers (a) Integers All integers are rational numbers: (b) Fractions Proper fraction: Improper fraction: Mixed number:

Numbers play significant roles in everyday life — in business for buying and selling; for measuring of a patient’s vitals (weight, temperature, rate of heartbeat etc.) in the hospital; for checking the speed limit of a moving vehicle when driving; to represent the quantities of food substances that should be combined to constitute a balanced