diff --git a/Src/Newtonsoft.Json.Tests/Linq/DynamicTests.cs b/Src/Newtonsoft.Json.Tests/Linq/DynamicTests.cs
index 21b615bd..23c360b1 100644
--- a/Src/Newtonsoft.Json.Tests/Linq/DynamicTests.cs
+++ b/Src/Newtonsoft.Json.Tests/Linq/DynamicTests.cs
@@ -168,6 +168,282 @@ namespace Newtonsoft.Json.Tests.Linq
       Assert.IsTrue(d.Bytes == new JValue(Encoding.UTF8.GetBytes("A string lol!")));
     }
 
+    [Test]
+    public void JValueAddition()
+    {
+      JObject o = new JObject(
+        new JProperty("Null", new JValue(null, JTokenType.Null)),
+        new JProperty("Integer", new JValue(1)),
+        new JProperty("Float", new JValue(1.1d)),
+        new JProperty("Decimal", new JValue(1.1m)),
+        new JProperty("DateTime", new JValue(new DateTime(2000, 12, 29, 23, 51, 10, DateTimeKind.Utc))),
+        new JProperty("Boolean", new JValue(true)),
+        new JProperty("String", new JValue("A string lol!")),
+        new JProperty("Bytes", new JValue(Encoding.UTF8.GetBytes("A string lol!")))
+        );
+
+      dynamic d = o;
+      dynamic r;
+
+      #region Add
+      r = d.String + " LAMO!";
+      Assert.AreEqual("A string lol! LAMO!", (string)r);
+      r += " gg";
+      Assert.AreEqual("A string lol! LAMO! gg", (string)r);
+
+      r = d.String + null;
+      Assert.AreEqual("A string lol!", (string)r);
+      r += null;
+      Assert.AreEqual("A string lol!", (string)r);
+
+      r = d.Integer + 1;
+      Assert.AreEqual(2, (int)r);
+      r += 2;
+      Assert.AreEqual(4, (int)r);
+
+      r = d.Integer + 1.1;
+      Assert.AreEqual(2.1, (double)r);
+      r += 2;
+      Assert.AreEqual(4.1, (double)r);
+
+      r = d.Integer + 1.1d;
+      Assert.AreEqual(2.1, (decimal)r);
+      r += 2;
+      Assert.AreEqual(4.1, (decimal)r);
+
+      r = d.Integer + null;
+      Assert.AreEqual(null, r.Value);
+      r += 2;
+      Assert.AreEqual(null, r.Value);
+
+      r = d.Float + 1;
+      Assert.AreEqual(2.1, (double)r);
+      r += 2;
+      Assert.AreEqual(4.1, (double)r);
+
+      r = d.Float + 1.1;
+      Assert.AreEqual(2.2, (double)r);
+      r += 2;
+      Assert.AreEqual(4.2, (double)r);
+
+      r = d.Float + 1.1d;
+      Assert.AreEqual(2.2, (decimal)r);
+      r += 2;
+      Assert.AreEqual(4.2, (decimal)r);
+
+      r = d.Float + null;
+      Assert.AreEqual(null, r.Value);
+      r += 2;
+      Assert.AreEqual(null, r.Value);
+
+      r = d.Decimal + 1;
+      Assert.AreEqual(2.1, (decimal)r);
+      r += 2;
+      Assert.AreEqual(4.1, (decimal)r);
+
+      r = d.Decimal + 1.1;
+      Assert.AreEqual(2.2, (decimal)r);
+      r += 2;
+      Assert.AreEqual(4.2, (decimal)r);
+
+      r = d.Decimal + 1.1d;
+      Assert.AreEqual(2.2, (decimal)r);
+      r += 2;
+      Assert.AreEqual(4.2, (decimal)r);
+
+      r = d.Decimal + null;
+      Assert.AreEqual(null, r.Value);
+      r += 2;
+      Assert.AreEqual(null, r.Value);
+      #endregion
+
+      #region Subtract
+      r = d.Integer - 1;
+      Assert.AreEqual(0, (int)r);
+      r -= 2;
+      Assert.AreEqual(-2, (int)r);
+
+      r = d.Integer - 1.1;
+      Assert.AreEqual(-0.1, (double)r, 0.00001);
+      r -= 2;
+      Assert.AreEqual(-2.1, (double)r);
+
+      r = d.Integer - 1.1d;
+      Assert.AreEqual(-0.1, (decimal)r);
+      r -= 2;
+      Assert.AreEqual(-2.1, (decimal)r);
+
+      r = d.Integer - null;
+      Assert.AreEqual(null, r.Value);
+      r -= 2;
+      Assert.AreEqual(null, r.Value);
+
+      r = d.Float - 1;
+      Assert.AreEqual(0.1, (double)r, 0.00001);
+      r -= 2;
+      Assert.AreEqual(-1.9, (double)r);
+
+      r = d.Float - 1.1;
+      Assert.AreEqual(0, (double)r);
+      r -= 2;
+      Assert.AreEqual(-2, (double)r);
+
+      r = d.Float - 1.1d;
+      Assert.AreEqual(0, (decimal)r);
+      r -= 2;
+      Assert.AreEqual(-2, (decimal)r);
+
+      r = d.Float - null;
+      Assert.AreEqual(null, r.Value);
+      r -= 2;
+      Assert.AreEqual(null, r.Value);
+
+      r = d.Decimal - 1;
+      Assert.AreEqual(0.1, (decimal)r);
+      r -= 2;
+      Assert.AreEqual(-1.9, (decimal)r);
+
+      r = d.Decimal - 1.1;
+      Assert.AreEqual(0, (decimal)r);
+      r -= 2;
+      Assert.AreEqual(-2, (decimal)r);
+
+      r = d.Decimal - 1.1d;
+      Assert.AreEqual(0, (decimal)r);
+      r -= 2;
+      Assert.AreEqual(-2, (decimal)r);
+
+      r = d.Decimal - null;
+      Assert.AreEqual(null, r.Value);
+      r -= 2;
+      Assert.AreEqual(null, r.Value);
+      #endregion
+
+      #region Multiply
+      r = d.Integer * 1;
+      Assert.AreEqual(1, (int)r);
+      r *= 2;
+      Assert.AreEqual(2, (int)r);
+
+      r = d.Integer * 1.1;
+      Assert.AreEqual(1.1, (double)r);
+      r *= 2;
+      Assert.AreEqual(2.2, (double)r);
+
+      r = d.Integer * 1.1d;
+      Assert.AreEqual(1.1, (decimal)r);
+      r *= 2;
+      Assert.AreEqual(2.2, (decimal)r);
+
+      r = d.Integer * null;
+      Assert.AreEqual(null, r.Value);
+      r *= 2;
+      Assert.AreEqual(null, r.Value);
+
+      r = d.Float * 1;
+      Assert.AreEqual(1.1, (double)r);
+      r *= 2;
+      Assert.AreEqual(2.2, (double)r);
+
+      r = d.Float * 1.1;
+      Assert.AreEqual(1.21, (double)r, 0.00001);
+      r *= 2;
+      Assert.AreEqual(2.42, (double)r, 0.00001);
+
+      r = d.Float * 1.1d;
+      Assert.AreEqual(1.21, (decimal)r);
+      r *= 2;
+      Assert.AreEqual(2.42, (decimal)r);
+
+      r = d.Float * null;
+      Assert.AreEqual(null, r.Value);
+      r *= 2;
+      Assert.AreEqual(null, r.Value);
+
+      r = d.Decimal * 1;
+      Assert.AreEqual(1.1, (decimal)r);
+      r *= 2;
+      Assert.AreEqual(2.2, (decimal)r);
+
+      r = d.Decimal * 1.1;
+      Assert.AreEqual(1.21, (decimal)r);
+      r *= 2;
+      Assert.AreEqual(2.42, (decimal)r);
+
+      r = d.Decimal * 1.1d;
+      Assert.AreEqual(1.21, (decimal)r);
+      r *= 2;
+      Assert.AreEqual(2.42, (decimal)r);
+
+      r = d.Decimal * null;
+      Assert.AreEqual(null, r.Value);
+      r *= 2;
+      Assert.AreEqual(null, r.Value);
+      #endregion
+
+      #region Divide
+      r = d.Integer / 1;
+      Assert.AreEqual(1, (int)r);
+      r /= 2;
+      Assert.AreEqual(0, (int)r);
+
+      r = d.Integer / 1.1;
+      Assert.AreEqual(0.9090909090909091, (double)r);
+      r /= 2;
+      Assert.AreEqual(0.454545454545455, (double)r, 0.00001);
+
+      r = d.Integer / 1.1d;
+      Assert.AreEqual(0.909090909090909m, (decimal)r);
+      r /= 2;
+      Assert.AreEqual(0.454545454545454m, (decimal)r);
+
+      r = d.Integer / null;
+      Assert.AreEqual(null, r.Value);
+      r /= 2;
+      Assert.AreEqual(null, r.Value);
+
+      r = d.Float / 1;
+      Assert.AreEqual(1.1, (double)r);
+      r /= 2;
+      Assert.AreEqual(0.55, (double)r);
+
+      r = d.Float / 1.1;
+      Assert.AreEqual(1, (double)r, 0.00001);
+      r /= 2;
+      Assert.AreEqual(0.5, (double)r, 0.00001);
+
+      r = d.Float / 1.1d;
+      Assert.AreEqual(1m, (decimal)r);
+      r /= 2;
+      Assert.AreEqual(0.5m, (decimal)r);
+
+      r = d.Float / null;
+      Assert.AreEqual(null, r.Value);
+      r /= 2;
+      Assert.AreEqual(null, r.Value);
+
+      r = d.Decimal / 1;
+      Assert.AreEqual(1.1d, (decimal)r);
+      r /= 2;
+      Assert.AreEqual(0.55d, (decimal)r);
+
+      r = d.Decimal / 1.1;
+      Assert.AreEqual(1d, (decimal)r);
+      r /= 2;
+      Assert.AreEqual(0.5d, (decimal)r);
+
+      r = d.Decimal / 1.1d;
+      Assert.AreEqual(1d, (decimal)r);
+      r /= 2;
+      Assert.AreEqual(0.5d, (decimal)r);
+
+      r = d.Decimal / null;
+      Assert.AreEqual(null, r.Value);
+      r /= 2;
+      Assert.AreEqual(null, r.Value);
+      #endregion
+    }
+
     [Test]
     public void JValueToString()
     {
diff --git a/Src/Newtonsoft.Json/Linq/JValue.cs b/Src/Newtonsoft.Json/Linq/JValue.cs
index 6bd01a96..927e36b4 100644
--- a/Src/Newtonsoft.Json/Linq/JValue.cs
+++ b/Src/Newtonsoft.Json/Linq/JValue.cs
@@ -227,6 +227,118 @@ namespace Newtonsoft.Json.Linq
       return d1.CompareTo(d2);
     }
 
+#if !(NET35 || NET20 || WINDOWS_PHONE)
+    private static bool Operation(ExpressionType operation, object objA, object objB, out object result)
+    {
+      if (objA is string || objB is string)
+      {
+        if (operation == ExpressionType.Add || operation == ExpressionType.AddAssign)
+        {
+          result = ((objA != null) ? objA.ToString() : null) + ((objB != null) ? objB.ToString() : null);
+          return true;
+        }
+      }
+
+      if (objA is ulong || objB is ulong || objA is decimal || objB is decimal)
+      {
+        if (objA == null || objB == null)
+        {
+          result = null;
+          return true;
+        }
+
+        decimal d1 = Convert.ToDecimal(objA, CultureInfo.InvariantCulture);
+        decimal d2 = Convert.ToDecimal(objB, CultureInfo.InvariantCulture);
+
+        switch (operation)
+        {
+          case ExpressionType.Add:
+          case ExpressionType.AddAssign:
+            result = d1 + d2;
+            return true;
+          case ExpressionType.Subtract:
+          case ExpressionType.SubtractAssign:
+            result = d1 - d2;
+            return true;
+          case ExpressionType.Multiply:
+          case ExpressionType.MultiplyAssign:
+            result = d1 * d2;
+            return true;
+          case ExpressionType.Divide:
+          case ExpressionType.DivideAssign:
+            result = d1 / d2;
+            return true;
+        }
+      }
+      else if (objA is float || objB is float || objA is double || objB is double)
+      {
+        if (objA == null || objB == null)
+        {
+          result = null;
+          return true;
+        }
+
+        double d1 = Convert.ToDouble(objA, CultureInfo.InvariantCulture);
+        double d2 = Convert.ToDouble(objB, CultureInfo.InvariantCulture);
+
+        switch (operation)
+        {
+          case ExpressionType.Add:
+          case ExpressionType.AddAssign:
+            result = d1 + d2;
+            return true;
+          case ExpressionType.Subtract:
+          case ExpressionType.SubtractAssign:
+            result = d1 - d2;
+            return true;
+          case ExpressionType.Multiply:
+          case ExpressionType.MultiplyAssign:
+            result = d1 * d2;
+            return true;
+          case ExpressionType.Divide:
+          case ExpressionType.DivideAssign:
+            result = d1 / d2;
+            return true;
+        }
+      }
+      else if (objA is int || objA is uint || objA is long || objA is short || objA is ushort || objA is sbyte || objA is byte ||
+        objB is int || objB is uint || objB is long || objB is short || objB is ushort || objB is sbyte || objB is byte)
+      {
+        if (objA == null || objB == null)
+        {
+          result = null;
+          return true;
+        }
+
+        long l1 = Convert.ToInt64(objA, CultureInfo.InvariantCulture);
+        long l2 = Convert.ToInt64(objB, CultureInfo.InvariantCulture);
+
+        switch (operation)
+        {
+          case ExpressionType.Add:
+          case ExpressionType.AddAssign:
+            result = l1 + l2;
+            return true;
+          case ExpressionType.Subtract:
+          case ExpressionType.SubtractAssign:
+            result = l1 - l2;
+            return true;
+          case ExpressionType.Multiply:
+          case ExpressionType.MultiplyAssign:
+            result = l1 * l2;
+            return true;
+          case ExpressionType.Divide:
+          case ExpressionType.DivideAssign:
+            result = l1 / l2;
+            return true;
+        }
+      }
+
+      result = null;
+      return false;
+    }
+#endif
+
     internal override JToken CloneToken()
     {
       return new JValue(this);
@@ -565,6 +677,20 @@ namespace Newtonsoft.Json.Linq
           case ExpressionType.LessThanOrEqual:
             result = (Compare(instance.Type, instance.Value, compareValue) <= 0);
             return true;
+          case ExpressionType.Add:
+          case ExpressionType.AddAssign:
+          case ExpressionType.Subtract:
+          case ExpressionType.SubtractAssign:
+          case ExpressionType.Multiply:
+          case ExpressionType.MultiplyAssign:
+          case ExpressionType.Divide:
+          case ExpressionType.DivideAssign:
+            if (Operation(binder.Operation, instance.Value, compareValue, out result))
+            {
+              result = new JValue(result);
+              return true;
+            }
+            break;
         }
 
         result = null;