diff --git a/src/libraries/System.Private.CoreLib/src/System/Double.cs b/src/libraries/System.Private.CoreLib/src/System/Double.cs
index 5993a9c08de8a9..170af804626767 100644
--- a/src/libraries/System.Private.CoreLib/src/System/Double.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Double.cs
@@ -1242,7 +1242,7 @@ static double IParseable<double>.Parse(string s, IFormatProvider? provider)
 
         [RequiresPreviewFeatures]
         static bool IParseable<double>.TryParse([NotNullWhen(true)] string? s, IFormatProvider? provider, out double result)
-            => TryParse(s, NumberStyles.Integer, provider, out result);
+            => TryParse(s, NumberStyles.Float | NumberStyles.AllowThousands, provider, out result);
 
         //
         // ISignedNumber
@@ -1257,11 +1257,11 @@ static bool IParseable<double>.TryParse([NotNullWhen(true)] string? s, IFormatPr
 
         [RequiresPreviewFeatures]
         static double ISpanParseable<double>.Parse(ReadOnlySpan<char> s, IFormatProvider? provider)
-            => Parse(s, NumberStyles.Integer, provider);
+            => Parse(s, NumberStyles.Float | NumberStyles.AllowThousands, provider);
 
         [RequiresPreviewFeatures]
         static bool ISpanParseable<double>.TryParse(ReadOnlySpan<char> s, IFormatProvider? provider, out double result)
-            => TryParse(s, NumberStyles.Integer, provider, out result);
+            => TryParse(s, NumberStyles.Float | NumberStyles.AllowThousands, provider, out result);
 
         //
         // ISubtractionOperators
diff --git a/src/libraries/System.Private.CoreLib/src/System/Single.cs b/src/libraries/System.Private.CoreLib/src/System/Single.cs
index a6baebff09aa2e..589cc26dcfdd16 100644
--- a/src/libraries/System.Private.CoreLib/src/System/Single.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Single.cs
@@ -1234,7 +1234,7 @@ static float IParseable<float>.Parse(string s, IFormatProvider? provider)
 
         [RequiresPreviewFeatures]
         static bool IParseable<float>.TryParse([NotNullWhen(true)] string? s, IFormatProvider? provider, out float result)
-            => TryParse(s, NumberStyles.Integer, provider, out result);
+            => TryParse(s, NumberStyles.Float | NumberStyles.AllowThousands, provider, out result);
 
         //
         // ISignedNumber
@@ -1249,11 +1249,11 @@ static bool IParseable<float>.TryParse([NotNullWhen(true)] string? s, IFormatPro
 
         [RequiresPreviewFeatures]
         static float ISpanParseable<float>.Parse(ReadOnlySpan<char> s, IFormatProvider? provider)
-            => Parse(s, NumberStyles.Integer, provider);
+            => Parse(s, NumberStyles.Float | NumberStyles.AllowThousands, provider);
 
         [RequiresPreviewFeatures]
         static bool ISpanParseable<float>.TryParse(ReadOnlySpan<char> s, IFormatProvider? provider, out float result)
-            => TryParse(s, NumberStyles.Integer, provider, out result);
+            => TryParse(s, NumberStyles.Float | NumberStyles.AllowThousands, provider, out result);
 
         //
         // ISubtractionOperators