finish math utils, all tests pass

src/main/java/com/zipcodewilmington/danny_do_better_exercises/MathUtilities.java

      * @return difference between `baseValue` and `difference`
      */
     public Float subtract(float baseValue, float difference) {
-        return baseValue - difference;
+        return (float)(baseValue - difference);
     }
 
     /**
      * @return division of `dividend` by `divisor
      */
     public Integer divide(int dividend, int divisor) {
-        return null;
+        return dividend / divisor;
     }
 
     /**
      * @return division of `dividend` by `divisor
      */
     public Long divide(long dividend, long divisor) {
-        return null;
+        return dividend / divisor;
     }
 
     /**
      * @return division of `dividend` by `divisor
      */
     public Short divide(short dividend, short divisor) {
-        return null;
+        return (short)(dividend / divisor);
     }
 
     /**
      * @return division of `dividend` by `divisor
      */
     public Byte divide(byte dividend, byte divisor) {
-        return null;
+        return (byte)(dividend / divisor);
     }
 
     /**
      * @return division of `dividend` by `divisor
      */
     public Float divide(float dividend, float divisor) {
-        return null;
+        return dividend / divisor;
     }
 
     /**
      * @return division of `dividend` by `divisor
      */
     public Double divide(double dividend, double divisor) {
-        return null;
+        return dividend / divisor;
     }
 
 
      * @return product of `multiplicand` by `multiplier`
      */
     public Integer multiply(int multiplicand, int multiplier) {
-        return null;
+        return multiplicand * multiplier;
     }
 
     /**
      * @return product of `multiplicand` by `multiplier`
      */
     public Long multiply(long multiplicand, long multiplier) {
-        return null;
+        return multiplicand * multiplier;
     }
 
     /**
      * @return product of `multiplicand` by `multiplier`
      */
     public Short multiply(short multiplicand, short multiplier) {
-        return null;
+        return (short)(multiplicand * multiplier);
     }
     /**
      * @param multiplicand value to be multiplied
      * @return product of `multiplicand` by `multiplier`
      */
     public Byte multiply(byte multiplicand, byte multiplier) {
-        return null;
+        return (byte)(multiplicand * multiplier);
     }
 
     /**
      * @return product of `multiplicand` by `multiplier`
      */
     public Float multiply(float multiplicand, float multiplier) {
-        return null;
+        return multiplicand * multiplier;
     }
 
     /**
      * @return product of `multiplicand` by `multiplier`
      */
     public Double multiply(double multiplicand, double multiplier) {
-        return null;
+        return multiplier * multiplicand;
     }
 
 
     public Boolean returnFalse() {
         return false;
     }
-
 }

src/test/java/com/zipcodewilmington/danny_do_better_exercises/TestMathUtilities.java

         // : Given
         short baseValue = 16384;
         short addedValue = 7;
-        short expected = 32767;
+        short expected = 16391;
         // : When
         short actual = primativeTypes.add(baseValue, addedValue);
         // : Then
         // : Given
         float baseValue = 750.585F;
         float difference = 795.0F;
-        float expectedFloat = -44.415F;
+        float expectedFloat = -44.414978F;
         // : When
         float actualFloat = primativeTypes.subtract(baseValue,difference);
         // : Then
         // : Given
         byte multiplicand = 16;
         byte multiplier = 14;
-        byte expectedByte = 64;
+        byte expectedByte = -32;
         // : When
         byte actualByte = primativeTypes.multiply(multiplicand, multiplier);
         // : Then