diff --git a/documents/Specification/MaterialX.Specification.md b/documents/Specification/MaterialX.Specification.md
index c66a448798..730c122df3 100644
--- a/documents/Specification/MaterialX.Specification.md
+++ b/documents/Specification/MaterialX.Specification.md
@@ -1057,13 +1057,13 @@ Math nodes have one or two spatially-varying inputs, and are used to perform a m
 <a id="node-add"> </a>
 
 * **`add`**: add a value to the incoming float/color/vector/matrix.
-    * `in1` (float or color<em>N</em> or vector<em>N</em> or matrix<em>NN</em>): the value or nodename for the primary input
+    * `in1` (float or integer or color<em>N</em> or vector<em>N</em> or matrix<em>NN</em>): the value or nodename for the primary input
     * `in2` (same type as `in1` or float): the value or nodename to add; for matrix types, the default is the zero matrix.
 
 <a id="node-subtract"> </a>
 
 * **`subtract`**: subtract a value from the incoming float/color/vector/matrix, outputting "in1-in2".
-    * `in1` (float or color<em>N</em> or vector<em>N</em> or matrix<em>NN</em>): the value or nodename for the primary input
+    * `in1` (float or integer or color<em>N</em> or vector<em>N</em> or matrix<em>NN</em>): the value or nodename for the primary input
     * `in2` (same type as `in1` or float): the value or nodename to subtract; for matrix types, the default is the zero matrix
 
 <a id="node-multiply"> </a>
diff --git a/libraries/stdlib/genglsl/stdlib_genglsl_impl.mtlx b/libraries/stdlib/genglsl/stdlib_genglsl_impl.mtlx
index dfbb639560..286338230f 100644
--- a/libraries/stdlib/genglsl/stdlib_genglsl_impl.mtlx
+++ b/libraries/stdlib/genglsl/stdlib_genglsl_impl.mtlx
@@ -187,6 +187,7 @@
 
   <!-- <add> -->
   <implementation name="IM_add_float_genglsl" nodedef="ND_add_float" target="genglsl" sourcecode="{{in1}} + {{in2}}" />
+  <implementation name="IM_add_integer_genglsl" nodedef="ND_add_integer" target="genglsl" sourcecode="{{in1}} + {{in2}}" />
   <implementation name="IM_add_color3_genglsl" nodedef="ND_add_color3" target="genglsl" sourcecode="{{in1}} + {{in2}}" />
   <implementation name="IM_add_color3FA_genglsl" nodedef="ND_add_color3FA" target="genglsl" sourcecode="{{in1}} + {{in2}}" />
   <implementation name="IM_add_color4_genglsl" nodedef="ND_add_color4" target="genglsl" sourcecode="{{in1}} + {{in2}}" />
@@ -204,6 +205,7 @@
 
   <!-- <subtract> -->
   <implementation name="IM_subtract_float_genglsl" nodedef="ND_subtract_float" target="genglsl" sourcecode="{{in1}} - {{in2}}" />
+  <implementation name="IM_subtract_integer_genglsl" nodedef="ND_subtract_integer" target="genglsl" sourcecode="{{in1}} - {{in2}}" />
   <implementation name="IM_subtract_color3_genglsl" nodedef="ND_subtract_color3" target="genglsl" sourcecode="{{in1}} - {{in2}}" />
   <implementation name="IM_subtract_color3FA_genglsl" nodedef="ND_subtract_color3FA" target="genglsl" sourcecode="{{in1}} - {{in2}}" />
   <implementation name="IM_subtract_color4_genglsl" nodedef="ND_subtract_color4" target="genglsl" sourcecode="{{in1}} - {{in2}}" />
diff --git a/libraries/stdlib/genmdl/stdlib_genmdl_impl.mtlx b/libraries/stdlib/genmdl/stdlib_genmdl_impl.mtlx
index b5e24f2f8e..126e5abf84 100644
--- a/libraries/stdlib/genmdl/stdlib_genmdl_impl.mtlx
+++ b/libraries/stdlib/genmdl/stdlib_genmdl_impl.mtlx
@@ -190,6 +190,7 @@
 
   <!-- <add> -->
   <implementation name="IM_add_float_genmdl" nodedef="ND_add_float" sourcecode="{{in1}} + {{in2}}" target="genmdl" />
+  <implementation name="IM_add_integer_genmdl" nodedef="ND_add_integer" sourcecode="{{in1}} + {{in2}}" target="genmdl" />
   <implementation name="IM_add_color3_genmdl" nodedef="ND_add_color3" sourcecode="{{in1}} + {{in2}}" target="genmdl" />
   <implementation name="IM_add_color3FA_genmdl" nodedef="ND_add_color3FA" sourcecode="{{in1}} + {{in2}}" target="genmdl" />
   <implementation name="IM_add_color4_genmdl" nodedef="ND_add_color4" sourcecode="mx_add({{in1}}, {{in2}})" target="genmdl" />
@@ -207,6 +208,7 @@
 
   <!-- <subtract> -->
   <implementation name="IM_subtract_float_genmdl" nodedef="ND_subtract_float" sourcecode="{{in1}} - {{in2}}" target="genmdl" />
+  <implementation name="IM_subtract_integer_genmdl" nodedef="ND_subtract_integer" sourcecode="{{in1}} - {{in2}}" target="genmdl" />
   <implementation name="IM_subtract_color3_genmdl" nodedef="ND_subtract_color3" sourcecode="{{in1}} - {{in2}}" target="genmdl" />
   <implementation name="IM_subtract_color3FA_genmdl" nodedef="ND_subtract_color3FA" sourcecode="{{in1}} - {{in2}}" target="genmdl" />
   <implementation name="IM_subtract_color4_genmdl" nodedef="ND_subtract_color4" sourcecode="mx_subtract({{in1}}, {{in2}})" target="genmdl" />
diff --git a/libraries/stdlib/genmsl/stdlib_genmsl_impl.mtlx b/libraries/stdlib/genmsl/stdlib_genmsl_impl.mtlx
index dd1eb93273..05a6ee154a 100644
--- a/libraries/stdlib/genmsl/stdlib_genmsl_impl.mtlx
+++ b/libraries/stdlib/genmsl/stdlib_genmsl_impl.mtlx
@@ -188,6 +188,7 @@
 
   <!-- <add> -->
   <implementation name="IM_add_float_genmsl" nodedef="ND_add_float" target="genmsl" sourcecode="{{in1}} + {{in2}}" />
+  <implementation name="IM_add_integer_genmsl" nodedef="ND_add_integer" target="genmsl" sourcecode="{{in1}} + {{in2}}" />
   <implementation name="IM_add_color3_genmsl" nodedef="ND_add_color3" target="genmsl" sourcecode="{{in1}} + {{in2}}" />
   <implementation name="IM_add_color3FA_genmsl" nodedef="ND_add_color3FA" target="genmsl" sourcecode="{{in1}} + {{in2}}" />
   <implementation name="IM_add_color4_genmsl" nodedef="ND_add_color4" target="genmsl" sourcecode="{{in1}} + {{in2}}" />
@@ -205,6 +206,7 @@
 
   <!-- <subtract> -->
   <implementation name="IM_subtract_float_genmsl" nodedef="ND_subtract_float" target="genmsl" sourcecode="{{in1}} - {{in2}}" />
+  <implementation name="IM_subtract_integer_genmsl" nodedef="ND_subtract_integer" target="genmsl" sourcecode="{{in1}} - {{in2}}" />
   <implementation name="IM_subtract_color3_genmsl" nodedef="ND_subtract_color3" target="genmsl" sourcecode="{{in1}} - {{in2}}" />
   <implementation name="IM_subtract_color3FA_genmsl" nodedef="ND_subtract_color3FA" target="genmsl" sourcecode="{{in1}} - {{in2}}" />
   <implementation name="IM_subtract_color4_genmsl" nodedef="ND_subtract_color4" target="genmsl" sourcecode="{{in1}} - {{in2}}" />
diff --git a/libraries/stdlib/genosl/stdlib_genosl_impl.mtlx b/libraries/stdlib/genosl/stdlib_genosl_impl.mtlx
index e51e0a4631..2d2b48d568 100644
--- a/libraries/stdlib/genosl/stdlib_genosl_impl.mtlx
+++ b/libraries/stdlib/genosl/stdlib_genosl_impl.mtlx
@@ -190,6 +190,7 @@
 
   <!-- <add> -->
   <implementation name="IM_add_float_genosl" nodedef="ND_add_float" target="genosl" sourcecode="{{in1}} + {{in2}}" />
+  <implementation name="IM_add_integer_genosl" nodedef="ND_add_integer" target="genosl" sourcecode="{{in1}} + {{in2}}" />
   <implementation name="IM_add_color3_genosl" nodedef="ND_add_color3" target="genosl" sourcecode="{{in1}} + {{in2}}" />
   <implementation name="IM_add_color3FA_genosl" nodedef="ND_add_color3FA" target="genosl" sourcecode="{{in1}} + {{in2}}" />
   <implementation name="IM_add_color4_genosl" nodedef="ND_add_color4" target="genosl" sourcecode="{{in1}} + {{in2}}" />
@@ -207,6 +208,7 @@
 
   <!-- <subtract> -->
   <implementation name="IM_subtract_float_genosl" nodedef="ND_subtract_float" target="genosl" sourcecode="{{in1}} - {{in2}}" />
+  <implementation name="IM_subtract_integer_genosl" nodedef="ND_subtract_integer" target="genosl" sourcecode="{{in1}} - {{in2}}" />
   <implementation name="IM_subtract_color3_genosl" nodedef="ND_subtract_color3" target="genosl" sourcecode="{{in1}} - {{in2}}" />
   <implementation name="IM_subtract_color3FA_genosl" nodedef="ND_subtract_color3FA" target="genosl" sourcecode="{{in1}} - {{in2}}" />
   <implementation name="IM_subtract_color4_genosl" nodedef="ND_subtract_color4" target="genosl" sourcecode="{{in1}} - {{in2}}" />
diff --git a/libraries/stdlib/stdlib_defs.mtlx b/libraries/stdlib/stdlib_defs.mtlx
index 010e2bfc1d..b97fb1bd18 100644
--- a/libraries/stdlib/stdlib_defs.mtlx
+++ b/libraries/stdlib/stdlib_defs.mtlx
@@ -1396,13 +1396,18 @@
 
   <!--
     Node: <add>
-    Add "in2" value/stream to the incoming float/color/vector/matrix.
+    Add "in2" value/stream to the incoming float/integer/color/vector/matrix.
   -->
   <nodedef name="ND_add_float" node="add" nodegroup="math">
     <input name="in1" type="float" value="0.0" />
     <input name="in2" type="float" value="0.0" />
     <output name="out" type="float" defaultinput="in1" />
   </nodedef>
+  <nodedef name="ND_add_integer" node="add" nodegroup="math">
+    <input name="in1" type="integer" value="0" />
+    <input name="in2" type="integer" value="0" />
+    <output name="out" type="integer" defaultinput="in1" />
+  </nodedef>
   <nodedef name="ND_add_color3" node="add" nodegroup="math">
     <input name="in1" type="color3" value="0.0, 0.0, 0.0" />
     <input name="in2" type="color3" value="0.0, 0.0, 0.0" />
@@ -1476,13 +1481,18 @@
 
   <!--
     Node: <subtract>
-    Subtract "in2" value/stream from the incoming float/color/vector/matrix.
+    Subtract "in2" value/stream from the incoming float/integer/color/vector/matrix.
   -->
   <nodedef name="ND_subtract_float" node="subtract" nodegroup="math">
     <input name="in1" type="float" value="0.0" />
     <input name="in2" type="float" value="0.0" />
     <output name="out" type="float" defaultinput="in1" />
   </nodedef>
+  <nodedef name="ND_subtract_integer" node="subtract" nodegroup="math">
+    <input name="in1" type="integer" value="0" />
+    <input name="in2" type="integer" value="0" />
+    <output name="out" type="integer" defaultinput="in1" />
+  </nodedef>
   <nodedef name="ND_subtract_color3" node="subtract" nodegroup="math">
     <input name="in1" type="color3" value="0.0, 0.0, 0.0" />
     <input name="in2" type="color3" value="0.0, 0.0, 0.0" />
diff --git a/resources/Materials/TestSuite/stdlib/math/math_operators.mtlx b/resources/Materials/TestSuite/stdlib/math/math_operators.mtlx
index f22181409d..d3745505d5 100644
--- a/resources/Materials/TestSuite/stdlib/math/math_operators.mtlx
+++ b/resources/Materials/TestSuite/stdlib/math/math_operators.mtlx
@@ -7,6 +7,13 @@
     </add>
     <output name="out" type="float" nodename="add1" />
   </nodegraph>
+  <nodegraph name="add_integer">
+    <add name="add1" type="integer">
+      <input name="in1" type="integer" value="2" />
+      <input name="in2" type="integer" value="3" />
+    </add>
+    <output name="out" type="integer" nodename="add1" />
+  </nodegraph>
   <nodegraph name="add_color3">
     <add name="add1" type="color3">
       <input name="in1" type="color3" value="0.2000, 0.3000, 0.0" />
@@ -84,6 +91,13 @@
     </subtract>
     <output name="out" type="float" nodename="subtract1" />
   </nodegraph>
+  <nodegraph name="subtract_integer">
+    <subtract name="subtract1" type="integer">
+      <input name="in1" type="integer" value="3" />
+      <input name="in2" type="integer" value="2" />
+    </subtract>
+    <output name="out" type="integer" nodename="subtract1" />
+  </nodegraph>
   <nodegraph name="subtract_color3">
     <subtract name="subtract1" type="color3">
       <input name="in1" type="color3" value="1.0000, 1.0000, 0.0" />