diff --git a/actionview/lib/action_view/helpers/number_helper.rb b/actionview/lib/action_view/helpers/number_helper.rb
index 879fc7dbf0d087b6d0a39effc1346250ada72a68..7220bded3c3b50fd599958609db2a093c2bf0bf7 100644
--- a/actionview/lib/action_view/helpers/number_helper.rb
+++ b/actionview/lib/action_view/helpers/number_helper.rb
@@ -266,14 +266,8 @@ def number_with_precision(number, options = {})
       #   number_to_human_size(1234567, precision: 2)                        # => 1.2 MB
       #   number_to_human_size(483989, precision: 2)                         # => 470 KB
       #   number_to_human_size(1234567, precision: 2, separator: ',')        # => 1,2 MB
-      #
-      # Non-significant zeros after the fractional separator are
-      # stripped out by default (set
-      # <tt>:strip_insignificant_zeros</tt> to +false+ to change
-      # that):
-      #
-      #   number_to_human_size(1234567890123, precision: 5)        # => "1.1228 TB"
-      #   number_to_human_size(524288000, precision: 5)            # => "500 MB"
+      #   number_to_human_size(1234567890123, precision: 5)                  # => "1.1228 TB"
+      #   number_to_human_size(524288000, precision: 5)                      # => "500 MB"
       def number_to_human_size(number, options = {})
         delegate_number_helper_method(:number_to_human_size, number, options)
       end
@@ -343,11 +337,15 @@ def number_to_human_size(number, options = {})
       #                           separator: ',',
       #                           significant: false)                   # => "1,2 Million"
       #
+      #   number_to_human(500000000, precision: 5)                      # => "500 Million"
+      #   number_to_human(12345012345, significant: false)              # => "12.345 Billion"
+      #
       # Non-significant zeros after the decimal separator are stripped
       # out by default (set <tt>:strip_insignificant_zeros</tt> to
       # +false+ to change that):
-      #   number_to_human(12345012345, significant: false)          # => "12.345 Billion"
-      #   number_to_human(500000000, precision: 5)                  # => "500 Million"
+      #
+      # number_to_human(12.00001)                                       # => "12"
+      # number_to_human(12.00001, strip_insignificant_zeros: false)     # => "12.0"
       #
       # ==== Custom Unit Quantifiers
       #
diff --git a/activesupport/lib/active_support/number_helper.rb b/activesupport/lib/active_support/number_helper.rb
index 7ddc7e505adde8abc02b8f1b091e5281bc3f84f1..5ecda9593a9af367fe9930e82d2852de5913da89 100644
--- a/activesupport/lib/active_support/number_helper.rb
+++ b/activesupport/lib/active_support/number_helper.rb
@@ -232,12 +232,8 @@ def number_to_rounded(number, options = {})
     #   number_to_human_size(1234567, precision: 2)                  # => 1.2 MB
     #   number_to_human_size(483989, precision: 2)                   # => 470 KB
     #   number_to_human_size(1234567, precision: 2, separator: ',')  # => 1,2 MB
-    #
-    # Non-significant zeros after the fractional separator are stripped out by
-    # default (set <tt>:strip_insignificant_zeros</tt> to +false+ to change that):
-    #
-    #   number_to_human_size(1234567890123, precision: 5) # => "1.1228 TB"
-    #   number_to_human_size(524288000, precision: 5)     # => "500 MB"
+    #   number_to_human_size(1234567890123, precision: 5)            # => "1.1228 TB"
+    #   number_to_human_size(524288000, precision: 5)                # => "500 MB"
     def number_to_human_size(number, options = {})
       NumberToHumanSizeConverter.convert(number, options)
     end
@@ -305,12 +301,15 @@ def number_to_human_size(number, options = {})
     #                            separator: ',',
     #                            significant: false) # => "1,2 Million"
     #
+    #   number_to_human(500000000, precision: 5)           # => "500 Million"
+    #   number_to_human(12345012345, significant: false)   # => "12.345 Billion"
+    #
     # Non-significant zeros after the decimal separator are stripped
     # out by default (set <tt>:strip_insignificant_zeros</tt> to
     # +false+ to change that):
     #
-    #   number_to_human(12345012345, significant: false)    # => "12.345 Billion"
-    #   number_to_human(500000000, precision: 5)            # => "500 Million"
+    # number_to_human(12.00001)                                       # => "12"
+    # number_to_human(12.00001, strip_insignificant_zeros: false)     # => "12.0"
     #
     # ==== Custom Unit Quantifiers
     #