Fractions

Fractions

1. Types of fractions

   • Proper
     • numerator smaller than denominator
   • Improper
     • numerator bigger than denominator
   • Mixed number

2. A fraction is part of a whole

3. to change to imp. to pro. divide d by n

4. to chang mixed no. to imp. e.g. 3x3+2 over 3

5. denominator

   • number of equal parts into which the unit is divided

6. Numerator

   • how many parts are shown

7. Equivalent fractiond

   • are fractions that name the sam amount
     • you can multiply or divide the fractions by the same number

8. Reducing fractions

   • divide num. and denim. by a common factor
     • Highest Common Factor (HCF)

9. Adding and subtracting fractions

   • add or subtract numerator if denominator is the same
     • Simplify when needed
   • Using improper fractions
     • change mixed number into improper
       • makes it easier to add and subtract
   • Trading
     • trade numbers in mixed umbers to make equations easier
   • add and subtract with different denominator
     • find lowest LCD
       • multiply num. and denim. with same number

10. Multiply fractions

    • 1. multiply numerators
      • 2. multiply denominators
        • 3. simplify if needed
    • change mixed numbers into improper fractions
      • convert back into mixed number
    • change whole number to over 1

11. Reciprocal

    • flip fractions upside down

12. dividing Fractions

    • 1. change sign to x
      • 2. turn second fraction upside down
        • 3. multiply fractions
          • 4. simplify if needed

13. fractiosn of quantities

    • large too small multiply
    • small to big divide