diff --git a/basis/db/tuples/tuples-tests.factor b/basis/db/tuples/tuples-tests.factor
index d4a58fa4fc..375ee509bb 100644
--- a/basis/db/tuples/tuples-tests.factor
+++ b/basis/db/tuples/tuples-tests.factor
@@ -411,7 +411,7 @@ TUPLE: exam id name score ;
             T{ exam f 4 "Cartman" 41 }
         }
     ] [
-        T{ exam f T{ interval f { 2 t } { 1.0/0.0 f } } } select-tuples
+        T{ exam f T{ interval f { 2 t } { 1/0. f } } } select-tuples
     ] unit-test
 
     [
@@ -419,7 +419,7 @@ TUPLE: exam id name score ;
             T{ exam f 1 "Kyle" 100 }
         }
     ] [
-        T{ exam f T{ interval f { -1.0/0.0 t } { 2 f } } } select-tuples
+        T{ exam f T{ interval f { -1/0. t } { 2 f } } } select-tuples
     ] unit-test
 
     [
@@ -430,7 +430,7 @@ TUPLE: exam id name score ;
             T{ exam f 4 "Cartman" 41 }
         }
     ] [
-        T{ exam f T{ interval f { -1.0/0.0 t } { 1/0. f } } } select-tuples
+        T{ exam f T{ interval f { -1/0. t } { 1/0. f } } } select-tuples
     ] unit-test
     
     [
diff --git a/basis/furnace/cache/cache.factor b/basis/furnace/cache/cache.factor
index a5308c171e..fe2840c9eb 100644
--- a/basis/furnace/cache/cache.factor
+++ b/basis/furnace/cache/cache.factor
@@ -22,7 +22,7 @@ server-state f
 
 : expire-state ( class -- )
     new
-        -1.0/0.0 millis [a,b] >>expires
+        -1/0. millis [a,b] >>expires
     delete-tuples ;
 
 TUPLE: server-state-manager < filter-responder timeout ;
diff --git a/basis/math/functions/functions-tests.factor b/basis/math/functions/functions-tests.factor
index 4c9d151fd8..397a7cc2f3 100644
--- a/basis/math/functions/functions-tests.factor
+++ b/basis/math/functions/functions-tests.factor
@@ -22,9 +22,9 @@ IN: math.functions.tests
 [ t ] [ e pi i* ^ imaginary-part -0.00001 0.00001 between? ] unit-test
 
 [ t ] [ 0 0 ^ fp-nan? ] unit-test
-[ 1.0/0.0 ] [ 0 -2 ^ ] unit-test
+[ 1/0. ] [ 0 -2 ^ ] unit-test
 [ t ] [ 0 0.0 ^ fp-nan? ] unit-test
-[ 1.0/0.0 ] [ 0 -2.0 ^ ] unit-test
+[ 1/0. ] [ 0 -2.0 ^ ] unit-test
 [ 0 ] [ 0 3.0 ^ ] unit-test
 [ 0 ] [ 0 3 ^ ] unit-test
 
diff --git a/basis/math/libm/libm-docs.factor b/basis/math/libm/libm-docs.factor
index bf4c608d77..a890a59c19 100644
--- a/basis/math/libm/libm-docs.factor
+++ b/basis/math/libm/libm-docs.factor
@@ -6,7 +6,7 @@ ARTICLE: "math.libm" "C standard library math functions"
 $nl
 "They can be called directly, however there is little reason to do so, since they only implement real-valued functions, and in some cases place restrictions on the domain:"
 { $example "USE: math.functions" "2 acos ." "C{ 0.0 1.316957896924817 }" }
-{ $unchecked-example "USE: math.libm" "2 facos ." "0.0/0.0" }
+{ $unchecked-example "USE: math.libm" "2 facos ." "0/0." }
 "Trigonometric functions:"
 { $subsection fcos }
 { $subsection fsin }
diff --git a/basis/wrap/wrap.factor b/basis/wrap/wrap.factor
index 58957ba8e7..482d50ab5f 100644
--- a/basis/wrap/wrap.factor
+++ b/basis/wrap/wrap.factor
@@ -30,7 +30,7 @@ SYMBOL: line-ideal
     { [ lines>> car 1list? ] [ top-fits? ] } 1|| ;
 
 :: min-by ( seq quot -- elt )
-    f 1.0/0.0 seq [| key value new |
+    f 1/0. seq [| key value new |
         new quot call :> newvalue
         newvalue value < [ new newvalue ] [ key value ] if
     ] each drop ; inline
diff --git a/core/math/floats/floats-tests.factor b/core/math/floats/floats-tests.factor
index 27cc510ea2..9f8f7b06fc 100644
--- a/core/math/floats/floats-tests.factor
+++ b/core/math/floats/floats-tests.factor
@@ -56,8 +56,6 @@ unit-test
 [ t ] [ 0.0 zero? ] unit-test
 [ t ] [ -0.0 zero? ] unit-test
 
-! [ f ] [ 0.0/0.0 0.0/0.0 number= ] unit-test
-
 [ 0 ] [ 1/0. >bignum ] unit-test
 
 [ t ] [ 64 [ 2^ 0.5 * ] map [ < ] monotonic? ] unit-test
diff --git a/core/math/integers/integers.factor b/core/math/integers/integers.factor
index e88caa7703..868d9fc02e 100644
--- a/core/math/integers/integers.factor
+++ b/core/math/integers/integers.factor
@@ -122,7 +122,7 @@ M: bignum (log2) bignum-log2 ;
         2drop 0.0
     ] [
         dup zero? [
-            2drop 1.0/0.0
+            2drop 1/0.
         ] [
             pre-scale
             /f-loop over odd?
diff --git a/extra/benchmark/raytracer/raytracer.factor b/extra/benchmark/raytracer/raytracer.factor
index a4df1fe04d..642b3dbb93 100755
--- a/extra/benchmark/raytracer/raytracer.factor
+++ b/extra/benchmark/raytracer/raytracer.factor
@@ -53,7 +53,7 @@ C: <sphere> sphere
 
 : sphere-t ( b d -- t )
     -+ dup 0.0 <
-    [ 2drop 1.0/0.0 ] [ [ [ 0.0 > ] keep ] dip ? ] if ; inline
+    [ 2drop 1/0. ] [ [ [ 0.0 > ] keep ] dip ? ] if ; inline
 
 : sphere-b&v ( sphere ray -- b v )
     [ sphere-v ] [ nip ] 2bi