diff --git a/tests/lean/simplifier_norm_num.lean b/tests/lean/simplifier_norm_num.lean
new file mode 100644
index 000000000..23babe155
--- /dev/null
+++ b/tests/lean/simplifier_norm_num.lean
@@ -0,0 +1,83 @@
+import algebra.numeral algebra.field
+open algebra
+     
+namespace norm_num
+universe l
+constants (A : Type.{l}) (A_comm_ring : comm_ring A)
+attribute A_comm_ring [instance]
+
+set_option simplify.max_steps 5000000
+set_option simplify.top_down false
+
+lemma bit0_add_bit0_helper [simp] (a b : A) : bit0 a + bit0 b = bit0 (a + b) := bit0_add_bit0_helper a b (a+b) rfl
+lemma add1_bit1_helper [simp] (a : A) : (bit1 a) + 1 = bit0 (a + 1) := add1_bit1_helper a (add1 a) rfl
+lemma bit1_add_one_helper [simp] (a : A) : bit1 a + 1 = (bit1 a) + 1 := bit1_add_one_helper a (add1 (bit1 a)) rfl
+
+lemma bit1_add_bit0_helper [simp] (a b : A) : bit1 a + bit0 b = bit1 (a + b) := bit1_add_bit0_helper a b (a + b) rfl
+lemma bit1_add_bit1_helper [simp] (a b : A) : bit1 a + bit1 b = bit0 (a + b + 1) := bit1_add_bit1_helper a b (a + b) (a + b + 1) rfl rfl
+lemma bit0_add_bit1_helper [simp] (a b : A) : bit0 a + bit1 b = bit1 (a + b) := bit0_add_bit1_helper a b (a + b) rfl
+lemma one_add_bit1_helper [simp] (a : A) : 1 + bit1 a = bit1 a + 1 := one_add_bit1_helper a (bit1 a + 1) rfl
+
+lemma bin_zero_add [simp] (a : A) : 0 + a = a := bin_zero_add a
+lemma bin_add_zero [simp] (a : A) : a + 0 = a := bin_add_zero a
+lemma one_add_one [simp] : (1:A) + 1 = 2 := one_add_one
+lemma one_add_bit0 [simp] (a : A) : 1 + bit0 a = bit1 a := one_add_bit0 a
+lemma bit0_add_one [simp] (a : A) : bit0 a + 1 = bit1 a := bit0_add_one a
+
+lemma mul_bit0_helper0 [simp] (a b : A) : bit0 a * bit0 b = bit0 (bit0 a * b) := mul_bit0_helper (bit0 a) b (bit0 a * b) rfl
+lemma mul_bit0_helper1 [simp] (a b : A) : bit1 a * bit0 b = bit0 (bit1 a * b) := mul_bit0_helper (bit1 a) b (bit1 a * b) rfl
+
+lemma mul_bit1_helper0 [simp] (a b : A) : bit0 a * bit1 b = bit0 (bit0 a * b) + bit0 a := mul_bit1_helper (bit0 a) b (bit0 a * b) (bit0 (bit0 a * b) + bit0 a) rfl rfl
+lemma mul_bit1_helper1 [simp] (a b : A) : bit1 a * bit1 b = bit0 (bit1 a * b) + bit1 a := mul_bit1_helper (bit1 a) b (bit1 a * b) (bit0 (bit1 a * b) + bit1 a) rfl rfl
+
+lemma mul_zero [simp] (a : A) : a * 0 = 0 := mul_zero a
+lemma zero_mul [simp] (a : A) : 0 * a = 0 := zero_mul a
+lemma mul_one [simp] (a : A) : a * 1 = a := mul_one a
+lemma one_mul [simp] (a : A) : 1 * a = a := one_mul a
+
+end norm_num
+
+open norm_num
+
+#simplify eq 0 (0:A) + 1 
+#simplify eq 0 (1:A) + 0 
+#simplify eq 0 (1:A) + 1 
+#simplify eq 0 (0:A) + 2 
+#simplify eq 0 (1:A) + 2 
+#simplify eq 0 (2:A) + 1 
+#simplify eq 0 (3:A) + 1 
+#simplify eq 0 (2:A) + 2 
+#simplify eq 0 (4:A) + 1 
+#simplify eq 0 (3:A) + 2 
+#simplify eq 0 (2:A) + 3 
+#simplify eq 0 (0:A) + 6 
+#simplify eq 0 (3:A) + 3 
+#simplify eq 0 (4:A) + 2 
+#simplify eq 0 (5:A) + 1 
+#simplify eq 0 (4:A) + 3 
+#simplify eq 0 (1:A) + 6 
+#simplify eq 0 (6:A) + 1 
+#simplify eq 0 (5:A) + 28
+#simplify eq 0 (0 : A) + (2 + 3) + 7
+#simplify eq 0 (70 : A) + (33 + 2)
+#simplify eq 0 (23000000000 : A) + 22000000000
+
+#simplify eq 0 (0 : A) * 0
+#simplify eq 0 (0 : A) * 1
+#simplify eq 0 (0 : A) * 2
+#simplify eq 0 (2 : A) * 0
+#simplify eq 0 (1 : A) * 0
+#simplify eq 0 (1 : A) * 1
+#simplify eq 0 (2 : A) * 1
+#simplify eq 0 (1 : A) * 2
+#simplify eq 0 (2 : A) * 2
+#simplify eq 0 (3 : A) * 2
+#simplify eq 0 (2 : A) * 3
+#simplify eq 0 (4 : A) * 1
+#simplify eq 0 (1 : A) * 4
+#simplify eq 0 (3 : A) * 3
+#simplify eq 0 (3 : A) * 4
+#simplify eq 0 (4 : A) * 4
+#simplify eq 0 (11 : A) * 2
+#simplify eq 0 (15 : A) * 6
+#simplify eq 0 (123456 : A) * 123456
diff --git a/tests/lean/simplifier_norm_num.lean.expected.out b/tests/lean/simplifier_norm_num.lean.expected.out
new file mode 100644
index 000000000..7aefaf890
--- /dev/null
+++ b/tests/lean/simplifier_norm_num.lean.expected.out
@@ -0,0 +1,41 @@
+1
+1
+2
+2
+3
+3
+4
+4
+5
+5
+5
+6
+6
+6
+6
+7
+7
+7
+33
+12
+105
+45000000000
+0
+0
+0
+0
+0
+1
+2
+2
+4
+6
+6
+4
+4
+9
+12
+16
+22
+90
+15241383936