diff --git a/index.js b/index.js
index e69de29bb..d5af5d5c9 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,34 @@
+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
+}
+
+function decrement(n) {
+  return --n
+}
+
+function makeInt(n) {
+ return parseInt(n, 10)
+}
+
+function preserveDecimal(n) {
+  return parseFloat(n)
+}
\ No newline at end of file