diff --git a/Tests/varLib/instancer/solver_test.py b/Tests/varLib/instancer/solver_test.py
index 303250454..2eadaddaa 100644
--- a/Tests/varLib/instancer/solver_test.py
+++ b/Tests/varLib/instancer/solver_test.py
@@ -59,7 +59,7 @@ class RebaseTentTest(object):
             pytest.param(
                 (0, .4, 1), (-1, 0, .5),
                 [
-                    (1, (0.0, 0.8, 1.99993896484375)),
+                    (1, (0.0, 0.8, pytest.approx(1.9999389))),
                 ]
             ),
 
@@ -68,14 +68,14 @@ class RebaseTentTest(object):
                 (0, .25, 1), (-1, 0, .4),
                 [
                     (1, (0.0, 0.625, 1.0)),
-                    (0.7999999999999999, (0.625, 1.0, 1.0)),
+                    (pytest.approx(0.8), (0.625, 1.0, 1.0)),
                 ]
             ),
             pytest.param(
                 (.25, .3, 1.05), (0, .2, .4),
                 [
-                    (1, (0.24999999999999994, 0.4999999999999999, 1.0)),
-                    (0.8666666666666667, (0.4999999999999999, 1.0, 1.0)),
+                    (1, (pytest.approx(.25), pytest.approx(.5), 1.0)),
+                    (pytest.approx(2.6/3), (pytest.approx(.5), 1.0, 1.0)),
                 ]
             ),
             # Case 4 boundary
@@ -106,7 +106,7 @@ class RebaseTentTest(object):
                 (.0, .5, 2), (.2, .5, .8),
                 [
                     (1, None),
-                    (-0.20000000000000007, (0, 1, 1)),
+                    (pytest.approx(-.2), (0, 1, 1)),
                     (-.6, (-1, -1, 0)),
                 ]
             ),
@@ -116,7 +116,7 @@ class RebaseTentTest(object):
                 (.0, .5, 2), (.2, .5, 1),
                 [
                     (1, None),
-                    (-0.33333333333333337, (0, 1, 1)),
+                    (pytest.approx(-1/3), (0, 1, 1)),
                     (-.6, (-1, -1, 0)),
                 ]
             ),
@@ -168,8 +168,8 @@ class RebaseTentTest(object):
                 (.3, .5, .7), (.1, .5, .9),
                 [
                     (1, None),
-                    (-1, (0, 0.4999999999999999, 1)),
-                    (-1, (0.4999999999999999, 1, 1)),
+                    (-1, (0, pytest.approx(.5), 1)),
+                    (-1, (pytest.approx(.5), 1, 1)),
                     (-1, (-1, -.5, 0)),
                     (-1, (-1, -1, -.5)),
                 ]