diff --git a/index.js b/index.js
index e69de29..8050a08 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,31 @@
+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
+}
+
+function dec(n){
+  return --n
+}
+
+function makeInt(n){
+  return parseInt(n, 10)
+}
+
+function preserveDecimal(n){
+  return parseFloat(n)
+}
\ No newline at end of file