diff --git a/Functions.ipynb b/Functions.ipynb
index df58b4c..4656a48 100644
--- a/Functions.ipynb
+++ b/Functions.ipynb
@@ -67,6 +67,129 @@
     "\n"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": 1,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "51"
+      ]
+     },
+     "execution_count": 1,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "##add - takes 2 parameters: the two numbers to add, returns the sum\n",
+    "def add (number1, number2):\n",
+    "    answer = number1+number2\n",
+    "    return  answer\n",
+    "add (45,6) "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "30"
+      ]
+     },
+     "execution_count": 7,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "# subtract - takes 2 parameters: the two numbers to subtract, returns the difference\n",
+    "def substract (number1, number2):\n",
+    "    answer = number1-number2\n",
+    "    return  answer\n",
+    "abs(4-34)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "## floorDivide - takes 2 parameters: the two numbers to divide, returns the whole quotient\n",
+    "def floorDivide (number1, number2):\n",
+    "    answer = number1-number2\n",
+    "    return  answer\n",
+    "floorDivide (34,5)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "scrolled": false
+   },
+   "outputs": [],
+   "source": [
+    "#divide - takes 2 parameters: the two numbers to divide, returns the quotient (as a decimal)\n",
+    "\n",
+    "def divite (number1, number2):\n",
+    "    answer = number/number2\n",
+    "    return  answer\n",
+    "divide (10,2)\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# multiply - takes 2 parameters: the two numbers to multiply, returns the product\n",
+    "def multiply (number1, number2): \n",
+    "    answer = number1 * number2\n",
+    "    return answer\n",
+    "multiply (10,10)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# getRemainder - takes 2 parameters: the two numbers to divide, returns the remainder\n",
+    "def getRemainder (number1, number2): \n",
+    "    answer = number1 % number2\n",
+    "    return answer\n",
+    "getRemainder (10,53)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# power takes 2 parameters: the two numbers one is the base the other the power, returns base ^ power\n",
+    "def power (number1, number2): \n",
+    "    answer = number1 **  number2\n",
+    "    return answer\n",
+    "power(3,4)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -79,9 +202,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
+   "metadata": {},
    "outputs": [],
    "source": [
     "#this function adds two numbers passed as parameters\n",
@@ -173,20 +294,27 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "assert 2 + 2 == 5, \"Houston we've got a problem\" #This will give an AssertionError\n"
+    "assert 2 + 2 == 5, \"Houston we've got a problem\" #This will give an AssertionError"
    ]
   },
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
+   "metadata": {},
    "outputs": [],
    "source": [
     "assert 2 + 2 == 4, \"Houston we've got a problem\" #this won't give an error!"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "assert 4 + 4 == 8"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},
@@ -206,12 +334,124 @@
     "power - takes 2 parameters: the two numbers one is the base the other the power, returns base ^ power\n"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": 15,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "#subtract - takes 2 parameters: the two numbers to subtract, returns the difference\n",
+    "def subtract (number1, number2):\n",
+    "    answer = number1-number2\n",
+    "    return  answer\n",
+    "assert subtract(4,5)==-1, \"subtract function not working\""
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 19,
+   "metadata": {},
+   "outputs": [
+    {
+     "ename": "AssertionError",
+     "evalue": "floor divide function not working",
+     "output_type": "error",
+     "traceback": [
+      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
+      "\u001b[0;31mAssertionError\u001b[0m                            Traceback (most recent call last)",
+      "\u001b[0;32m<ipython-input-19-ffba8c2c9178>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m      3\u001b[0m     \u001b[0manswer\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mnumber1\u001b[0m \u001b[0;34m//\u001b[0m \u001b[0mnumber2\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      4\u001b[0m     \u001b[0;32mreturn\u001b[0m  \u001b[0manswer\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 5\u001b[0;31m \u001b[0;32massert\u001b[0m \u001b[0mfloorDivide\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;36m1\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;36m2\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m==\u001b[0m\u001b[0;36m0.5\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m\"floor divide function not working\"\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
+      "\u001b[0;31mAssertionError\u001b[0m: floor divide function not working"
+     ]
+    }
+   ],
+   "source": [
+    "# floorDivide - takes 2 parameters: the two numbers to divide, returns the whole quotient\n",
+    "def floorDivide (number1, number2):\n",
+    "    answer = number1 // number2\n",
+    "    return  answer\n",
+    "assert floorDivide(1,2)==0.5, \"floor divide function not working\" # actual answer is meant to be 0"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 21,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# divide - takes 2 parameters: the two numbers to divide, returns the quotient (as a decimal)\n",
+    "def divide (number1, number2):\n",
+    "    answer = number1 / number2\n",
+    "    return  answer\n",
+    "assert divide(5,5)==1.0, \"divide function not working\""
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 23,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# multiply - takes 2 parameters: the two numbers to multiply, returns the product\n",
+    "def multiply (number1, number2):\n",
+    "    answer = number1 * number2\n",
+    "    return  answer\n",
+    "assert multiply(4,5)==20, \"multiply function not working\""
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 24,
+   "metadata": {},
+   "outputs": [
+    {
+     "ename": "AssertionError",
+     "evalue": "getRemainder function not working",
+     "output_type": "error",
+     "traceback": [
+      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
+      "\u001b[0;31mAssertionError\u001b[0m                            Traceback (most recent call last)",
+      "\u001b[0;32m<ipython-input-24-c34e4e7bcbea>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m      3\u001b[0m     \u001b[0manswer\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mnumber1\u001b[0m \u001b[0;34m*\u001b[0m \u001b[0mnumber2\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      4\u001b[0m     \u001b[0;32mreturn\u001b[0m  \u001b[0manswer\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 5\u001b[0;31m \u001b[0;32massert\u001b[0m \u001b[0mgetRemainder\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;36m5\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;36m4\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m==\u001b[0m\u001b[0;36m1\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m\"getRemainder function not working\"\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
+      "\u001b[0;31mAssertionError\u001b[0m: getRemainder function not working"
+     ]
+    }
+   ],
+   "source": [
+    "# getRemainder - takes 2 parameters: the two numbers to divide, returns the remainder\n",
+    "def getRemainder (number1, number2):\n",
+    "    answer = number1 * number2\n",
+    "    return  answer\n",
+    "assert getRemainder(5,4)==1, \"getRemainder function not working\""
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 25,
+   "metadata": {},
+   "outputs": [
+    {
+     "ename": "AssertionError",
+     "evalue": "power function not working",
+     "output_type": "error",
+     "traceback": [
+      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
+      "\u001b[0;31mAssertionError\u001b[0m                            Traceback (most recent call last)",
+      "\u001b[0;32m<ipython-input-25-8b6577173b1f>\u001b[0m in \u001b[0;36m<module>\u001b[0;34m()\u001b[0m\n\u001b[1;32m      2\u001b[0m     \u001b[0manswer\u001b[0m \u001b[0;34m=\u001b[0m \u001b[0mnumber1\u001b[0m \u001b[0;34m*\u001b[0m \u001b[0mnumber2\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m      3\u001b[0m     \u001b[0;32mreturn\u001b[0m  \u001b[0manswer\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m----> 4\u001b[0;31m \u001b[0;32massert\u001b[0m \u001b[0mpower\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;36m3\u001b[0m\u001b[0;34m,\u001b[0m\u001b[0;36m2\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m==\u001b[0m\u001b[0;36m9\u001b[0m\u001b[0;34m,\u001b[0m \u001b[0;34m\"power function not working\"\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
+      "\u001b[0;31mAssertionError\u001b[0m: power function not working"
+     ]
+    }
+   ],
+   "source": [
+    "# power - takes 2 parameters: the two numbers one is the base the other the power, returns base ^ power\n",
+    "def power (number1, number2):\n",
+    "    answer = number1 * number2\n",
+    "    return  answer\n",
+    "assert power(3,2)==9, \"power function not working\""
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
+   "metadata": {},
    "outputs": [],
    "source": [
     "# subtract function \n",
@@ -239,9 +479,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
+   "metadata": {},
    "outputs": [],
    "source": [
     "assert add(4,5)==9, \"add function not working\""
@@ -250,9 +488,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
+   "metadata": {},
    "outputs": [],
    "source": [
     "assert subtract(4,5)==-1, \"subtract function not working\""
@@ -261,9 +497,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
+   "metadata": {},
    "outputs": [],
    "source": [
     "assert multiply(4,5)==20, \"multiply function not working\""
@@ -272,9 +506,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
+   "metadata": {},
    "outputs": [],
    "source": [
     "assert divide(5,5)==1.0, \"divide function not working\""
@@ -283,9 +515,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
+   "metadata": {},
    "outputs": [],
    "source": [
     "assert floorDivide(1,2)==0.5, \"floor divide function not working\""
@@ -294,9 +524,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
+   "metadata": {},
    "outputs": [],
    "source": [
     "assert getRemainder(5,4)==1, \"getRemainder function not working\""
@@ -305,9 +533,7 @@
   {
    "cell_type": "code",
    "execution_count": null,
-   "metadata": {
-    "collapsed": true
-   },
+   "metadata": {},
    "outputs": [],
    "source": [
     "assert power(3,2)==9, \"power function not working\""