diff --git a/index.js b/index.js
index e69de29..30a2110 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,24 @@
+function 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 inc(n){
+  return n+=1;
+}
+function dec(n){
+  return n-=1;
+}
+function makeInt(n){
+  return parseInt(n,10)
+}
+function preserveDecimal(n){
+  return parseFloat(n,10)
+}