diff --git a/include/assimp/matrix4x4.h b/include/assimp/matrix4x4.h
index 17b2d3106..9f87efca7 100644
--- a/include/assimp/matrix4x4.h
+++ b/include/assimp/matrix4x4.h
@@ -112,6 +112,8 @@ public:
     // matrix multiplication.
     aiMatrix4x4t& operator *= (const aiMatrix4x4t& m);
     aiMatrix4x4t  operator *  (const aiMatrix4x4t& m) const;
+    aiMatrix4x4t operator * (const TReal& aFloat) const;
+    aiMatrix4x4t operator + (const aiMatrix4x4t& aMatrix) const;
 
     template <typename TOther>
     operator aiMatrix4x4t<TOther> () const;
diff --git a/include/assimp/matrix4x4.inl b/include/assimp/matrix4x4.inl
index 32012654c..c36c893ce 100644
--- a/include/assimp/matrix4x4.inl
+++ b/include/assimp/matrix4x4.inl
@@ -155,6 +155,54 @@ inline aiMatrix4x4t<TReal>& aiMatrix4x4t<TReal>::operator *= (const aiMatrix4x4t
     return *this;
 }
 
+// ----------------------------------------------------------------------------------------
+template <typename TReal>
+inline aiMatrix4x4t<TReal> aiMatrix4x4t<TReal>::operator* (const TReal& aFloat) const
+{
+    aiMatrix4x4t<TReal> temp(
+        a1 * aFloat,
+        a2 * aFloat,
+        a3 * aFloat,
+        a4 * aFloat,
+        b1 * aFloat,
+        b2 * aFloat,
+        b3 * aFloat,
+        b4 * aFloat,
+        c1 * aFloat,
+        c2 * aFloat,
+        c3 * aFloat,
+        c4 * aFloat,
+        d1 * aFloat,
+        d2 * aFloat,
+        d3 * aFloat,
+        d4 * aFloat);
+    return temp;
+}
+
+// ----------------------------------------------------------------------------------------
+template <typename TReal>
+inline aiMatrix4x4t<TReal> aiMatrix4x4t<TReal>::operator+ (const aiMatrix4x4t<TReal>& m) const
+{
+    aiMatrix4x4t<TReal> temp(
+        m.a1 + a1,
+        m.a2 + a2,
+        m.a3 + a3,
+        m.a4 + a4,
+        m.b1 + b1,
+        m.b2 + b2,
+        m.b3 + b3,
+        m.b4 + b4,
+        m.c1 + c1,
+        m.c2 + c2,
+        m.c3 + c3,
+        m.c4 + c4,
+        m.d1 + d1,
+        m.d2 + d2,
+        m.d3 + d3,
+        m.d4 + d4);
+    return temp;
+}
+
 // ----------------------------------------------------------------------------------------
 template <typename TReal>
 inline aiMatrix4x4t<TReal> aiMatrix4x4t<TReal>::operator* (const aiMatrix4x4t<TReal>& m) const