diff --git a/index.js b/index.js
index e69de29bb2..efb7bd097e 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,50 @@
+function add(){}
+function subtract(){}
+function multiply(){}
+function divide(){}
+
+var a = 5
+var b = 3  
+function add(a,b){
+  return a+b
+}
+
+var a = 5
+var b = 3  
+function subtract(a,b){
+  return a-b
+}
+
+var a = 5
+var b = 3  
+function multiply(a,b){
+  return a*b
+}
+
+var a = 5
+var b = 3  
+function divide(a,b){
+  return a/b
+}
+
+
+var n = 5
+function increment(n) {
+  return n+ 1;
+}
+
+var n = 5
+function decrement(n) {
+  return n- 1;}
+  
+
+var n = 5
+function makeInt(n){
+  parseInt('5.5', 10)
+  return parseInt(n, 10)
+}
+
+function preserveDecimal(n){
+parseFloat(`5.55`, 10)
+return parseFloat (n)
+}
\ No newline at end of file