diff --git a/index.js b/index.js
index e69de29bb..f1b3ec96a 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,31 @@
+add = (a,b) => {
+  return a + b
+}
+
+function subtract(a,b) {
+  return a - b
+}
+
+function multiply (a,b) {
+  return a * b
+}
+
+function divide (a,b) {
+  return a / b
+}
+
+function increment (n){
+  return n +=1
+}
+
+function decrement (n){
+  return n -=1
+}
+
+function makeInt(n) {
+ return parseInt(n, 10)
+}
+
+function preserveDecimal(n){
+ return parseFloat(n)
+}
\ No newline at end of file