diff --git a/manimlib/mobject/numbers.py b/manimlib/mobject/numbers.py
index 71265ff7..651b3660 100644
--- a/manimlib/mobject/numbers.py
+++ b/manimlib/mobject/numbers.py
@@ -1,5 +1,7 @@
 from manimlib.constants import *
 from manimlib.mobject.svg.tex_mobject import SingleStringTexMobject
+from manimlib.mobject.svg.tex_mobject import tex_string_to_mob_map
+from manimlib.mobject.svg.tex_mobject import SCALE_FACTOR_PER_FONT_POINT
 from manimlib.mobject.types.vectorized_mobject import VMobject
 
 
@@ -85,7 +87,16 @@ class DecimalNumber(VMobject):
         return self.data["font_size"][0]
 
     def string_to_mob(self, tex_string):
-        return SingleStringTexMobject(tex_string, font_size=self.get_font_size())
+        # Could just call SingleStringTexMobject, and there is
+        # some code repetition here by looking to the same cache,
+        # but it means keeps things from initializing a new object
+        # more than is necessary
+        if tex_string in tex_string_to_mob_map:
+            result = tex_string_to_mob_map[tex_string].copy()
+            result.scale(self.get_font_size() * SCALE_FACTOR_PER_FONT_POINT)
+            return result
+        else:
+            return SingleStringTexMobject(tex_string, font_size=self.get_font_size())
 
     def get_formatter(self, **kwargs):
         """
diff --git a/manimlib/mobject/svg/tex_mobject.py b/manimlib/mobject/svg/tex_mobject.py
index 15240d47..e6ff74eb 100644
--- a/manimlib/mobject/svg/tex_mobject.py
+++ b/manimlib/mobject/svg/tex_mobject.py
@@ -18,7 +18,7 @@ from manimlib.utils.tex_file_writing import display_during_execution
 SCALE_FACTOR_PER_FONT_POINT = 0.001
 
 
-tex_string_to_summobject_map = {}
+tex_string_to_mob_map = {}
 
 
 class SingleStringTexMobject(VMobject):
@@ -37,7 +37,7 @@ class SingleStringTexMobject(VMobject):
         super().__init__(**kwargs)
         assert(isinstance(tex_string, str))
         self.tex_string = tex_string
-        if tex_string not in tex_string_to_summobject_map:
+        if tex_string not in tex_string_to_mob_map:
             full_tex = self.get_tex_file_body(tex_string)
             filename = tex_to_svg_file(full_tex)
             svg_mob = SVGMobject(
@@ -48,11 +48,11 @@ class SingleStringTexMobject(VMobject):
                     "should_remove_null_curves": True,
                 }
             )
-            tex_string_to_summobject_map[tex_string] = svg_mob.submobjects
+            tex_string_to_mob_map[tex_string] = svg_mob
 
         self.add(*(
             sm.copy()
-            for sm in tex_string_to_summobject_map[tex_string]
+            for sm in tex_string_to_mob_map[tex_string]
         ))
 
         if self.height is None: