diff --git a/cal.rb b/cal.rb
index 138cb69..c0bb38e 100644
--- a/cal.rb
+++ b/cal.rb
@@ -4,3 +4,6 @@
 num2 = gets.chomp().to_f
 
 puts (num1 + num2)
+puts (num1 - num2)
+puts (num1 * num2)
+puts (num1 / num2)