diff --git a/index.js b/index.js
index e69de29bb..7d4cd3dc1 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,32 @@
+function add(num1, num2) {
+  return num1 + num2
+}
+function subtract(num1, num2) {
+  return num1 - num2
+}
+
+function multiply(num1, num2) {
+  return num1 * num2
+}
+
+function divide(num1, num2) {
+  return num1 / num2
+}
+
+function increment(n) {
+  n++
+  return n
+}
+
+function decrement(n) {
+  n--
+  return n
+}
+
+function makeInt(n) {
+return parseInt(n, 10)
+}
+
+function preserveDecimal(n) {
+return parseFloat(n)
+}