diff --git a/cs675/bottomup/arithmetic.grammar b/cs675/bottomup/arithmetic.grammar
new file mode 100644
index 0000000..d156aa2
--- /dev/null
+++ b/cs675/bottomup/arithmetic.grammar
@@ -0,0 +1,29 @@
+
+Package jholtrop.gvsu.cs675.bottomup;
+
+Tokens
+    blank = (' ' | 9 | 10 | 13);
+    number = ['0' .. '9']+ ('.' ['0' .. '9']+)?;
+    plus = '+';
+    minus = '-';
+    multiply = '*';
+    divide = '/';
+    l_par = '(';
+    r_par = ')';
+
+Ignored Tokens
+    blank;
+
+Productions
+    expr =
+        {addition} expr plus term |
+        {subtraction} expr minus term |
+        {term} term;
+
+    term =
+        {multiplication} term multiply factor |
+        {division} term divide factor;
+
+    factor =
+        {number} number |
+        {paren} l_par expr r_par;