diff --git a/index.js b/index.js
index e69de29..6d0ad4a 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,30 @@
+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(a) {
+  return a + 1
+}
+function dec(a) {
+  return a - 1
+}
+function makeInt(string) {
+  return string.a
+}
+function makeInt(n) {
+  return n
+}
+function makeInt(n) {
+  return parseInt(n, 10)
+}
+function preserveDecimal(n) {
+  return parseFloat(n)
+}
\ No newline at end of file