diff --git a/index.js b/index.js
index e69de29bb2..61492380af 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,27 @@
+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 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