Fractions and Decimals

Fractions and Decimals

1. Decimals

   • Multiplying
     • Multiplying by a decimal smaller than 1 will make the number smaller
   • Addition
     • Similar to normal addition
   • Division
     • Dividing by a decimal will make the number larger
   • Subtraction
     • Similar to normal subtraction
   • 10th,100ths,1000ths...
   • Lay out onto of each other with correct place holders
   • Ignore the decimal point then add back in

2. Fractions

   • Multiplying
     • Don't need to change the denominator if multiplying 2 fractions
   • Addition
     • Need to have the same denominator if adding 2 fractions
     • Only change the numerator
   • Subtraction
     • Need to have the same denominator if subtracting 2 fractions
     • Only change the numerator
   • Division
     • Don't need to change the denominator if dividing 2 fractions
       • Use reciprocal of denominator for 2nd fraction numerator and vice versa
   • Can be used with algebra
   • Used in formulae
   • Mixed Numbers
   • Common Denominator
   • Simplifying

3. Sam Pennant