diff --git a/README.md b/README.md
index 393d611..df0c1a8 100644
--- a/README.md
+++ b/README.md
@@ -369,6 +369,10 @@ Workflow
 <td>Получение произведения двух чисел.</td>
 </tr>
 <tr>
+<td>:new: Round</td>
+<td>Округление числа по математическим правилам, а также в большую и меньшу стороны.</td>
+</tr>
+<tr>
 <td>:new: Sum</td>
 <td>Получение суммы двух чисел.</td>
 </tr>
diff --git a/Source/Tools/Math/Math Tests/Math Tests.csproj b/Source/Tools/Math/Math Tests/Math Tests.csproj
index f78b8bd..568ceb0 100644
--- a/Source/Tools/Math/Math Tests/Math Tests.csproj	
+++ b/Source/Tools/Math/Math Tests/Math Tests.csproj	
@@ -96,7 +96,7 @@
     <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="Workflow\DiffTests.cs" />
+    <Compile Include="Workflow\RoundTests.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>
   <ItemGroup>
diff --git a/Source/Tools/Math/Math Tests/Workflow/DiffTests.cs b/Source/Tools/Math/Math Tests/Workflow/DiffTests.cs
deleted file mode 100644
index dd1df2a..0000000
--- a/Source/Tools/Math/Math Tests/Workflow/DiffTests.cs	
+++ /dev/null
@@ -1,22 +0,0 @@
-using Microsoft.VisualStudio.TestTools.UnitTesting;
-using System.Activities;
-using System.Collections.Generic;
-using Microsoft.Xrm.Sdk;
-using Microsoft.Xrm.Sdk.Workflow;
-using PZone.MathTools.Workflow;
-using PZone.Xrm.Testing;
-using PZone.Xrm.Testing.Workflow;
-
-
-namespace PZone.Tests.MathTools.Workflow
-{
-    [TestClass]
-    public class DiffTests
-    {
-        [TestMethod]
-        public void Success()
-        {
-
-        }
-    }
-}
diff --git a/Source/Tools/Math/Math Tests/Workflow/RoundTests.cs b/Source/Tools/Math/Math Tests/Workflow/RoundTests.cs
new file mode 100644
index 0000000..bcbe1e8
--- /dev/null
+++ b/Source/Tools/Math/Math Tests/Workflow/RoundTests.cs	
@@ -0,0 +1,134 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System.Activities;
+using System.Collections.Generic;
+using Microsoft.Xrm.Sdk;
+using Microsoft.Xrm.Sdk.Workflow;
+using PZone.MathTools.Workflow;
+using PZone.Xrm.Testing;
+using PZone.Xrm.Testing.Workflow;
+
+
+namespace PZone.Tests.MathTools.Workflow
+{
+    [TestClass]
+    public class RoundTests
+    {
+        [TestMethod]
+        public void Success()
+        {
+            var action = new Round();
+            var invoker = new WorkflowInvoker(action);
+            invoker.Extensions.Add<ITracingService>(() => new FakeTracingService());
+            invoker.Extensions.Add<IWorkflowContext>(() => new FakeWorkflowContext());
+            invoker.Extensions.Add<IOrganizationServiceFactory>(() => new FakeOrganizationServiceFactory(new FakeOrganizationService()));
+
+            var result = invoker.Invoke(new Dictionary<string, object>
+            {
+                { "Value", 2.22m },
+                { "Digits", 1 }
+            });
+            Assert.AreEqual(2.2m, result["RoundValue"]);
+            Assert.AreEqual(2.3m, result["CeilingValue"]);
+            Assert.AreEqual(2.2m, result["FloorValue"]);
+
+            result = invoker.Invoke(new Dictionary<string, object>
+            {
+                { "Value", 2.22m },
+                { "Digits", 0 }
+            });
+            Assert.AreEqual(2m, result["RoundValue"]);
+            Assert.AreEqual(3m, result["CeilingValue"]);
+            Assert.AreEqual(2m, result["FloorValue"]);
+
+            result = invoker.Invoke(new Dictionary<string, object>
+            {
+                { "Value", 2.22m },
+                { "Digits", 2 }
+            });
+            Assert.AreEqual(2.22m, result["RoundValue"]);
+            Assert.AreEqual(2.22m, result["CeilingValue"]);
+            Assert.AreEqual(2.22m, result["FloorValue"]);
+            
+            result = invoker.Invoke(new Dictionary<string, object>
+            {
+                { "Value", 2.22m },
+                { "Digits", 3 }
+            });
+            Assert.AreEqual(2.22m, result["RoundValue"]);
+            Assert.AreEqual(2.22m, result["CeilingValue"]);
+            Assert.AreEqual(2.22m, result["FloorValue"]);
+
+            result = invoker.Invoke(new Dictionary<string, object>
+            {
+                { "Value", 2.26m },
+                { "Digits", 1 }
+            });
+            Assert.AreEqual(2.3m, result["RoundValue"]);
+            Assert.AreEqual(2.3m, result["CeilingValue"]);
+            Assert.AreEqual(2.2m, result["FloorValue"]);
+
+            result = invoker.Invoke(new Dictionary<string, object>
+            {
+                { "Value", 2.25m },
+                { "Digits", 1 }
+            });
+            Assert.AreEqual(2.3m, result["RoundValue"]);
+            Assert.AreEqual(2.3m, result["CeilingValue"]);
+            Assert.AreEqual(2.2m, result["FloorValue"]);
+
+            result = invoker.Invoke(new Dictionary<string, object>
+            {
+                { "Value", 2.2m },
+                { "Digits", 0 }
+            });
+            Assert.AreEqual(2m, result["RoundValue"]);
+            Assert.AreEqual(3m, result["CeilingValue"]);
+            Assert.AreEqual(2m, result["FloorValue"]);
+
+            result = invoker.Invoke(new Dictionary<string, object>
+            {
+                { "Value", 2.5m },
+                { "Digits", 0 }
+            });
+            Assert.AreEqual(3m, result["RoundValue"]);
+            Assert.AreEqual(3m, result["CeilingValue"]);
+            Assert.AreEqual(2m, result["FloorValue"]);
+
+            result = invoker.Invoke(new Dictionary<string, object>
+            {
+                { "Value", -2.22m },
+                { "Digits", 1 }
+            });
+            Assert.AreEqual(-2.2m, result["RoundValue"]);
+            Assert.AreEqual(-2.2m, result["CeilingValue"]);
+            Assert.AreEqual(-2.3m, result["FloorValue"]);
+
+            result = invoker.Invoke(new Dictionary<string, object>
+            {
+                { "Value", -1.22m },
+                { "Digits", 1 }
+            });
+            Assert.AreEqual(-1.2m, result["RoundValue"]);
+            Assert.AreEqual(-1.2m, result["CeilingValue"]);
+            Assert.AreEqual(-1.3m, result["FloorValue"]);
+            
+            result = invoker.Invoke(new Dictionary<string, object>
+            {
+                { "Value", -1.25m },
+                { "Digits", 1 }
+            });
+            Assert.AreEqual(-1.3m, result["RoundValue"]);
+            Assert.AreEqual(-1.2m, result["CeilingValue"]);
+            Assert.AreEqual(-1.3m, result["FloorValue"]);
+
+            result = invoker.Invoke(new Dictionary<string, object>
+            {
+                { "Value", -1.15m },
+                { "Digits", 1 }
+            });
+            Assert.AreEqual(-1.2m, result["RoundValue"]);
+            Assert.AreEqual(-1.1m, result["CeilingValue"]);
+            Assert.AreEqual(-1.2m, result["FloorValue"]);
+        }
+    }
+}
\ No newline at end of file
diff --git a/Source/Tools/Math/Math/Math.csproj b/Source/Tools/Math/Math/Math.csproj
index 20c9cfd..0887f6f 100644
--- a/Source/Tools/Math/Math/Math.csproj
+++ b/Source/Tools/Math/Math/Math.csproj
@@ -41,6 +41,7 @@
     <Compile Include="Workflow\Diff.cs" />
     <Compile Include="Workflow\Division.cs" />
     <Compile Include="Workflow\Multiplication.cs" />
+    <Compile Include="Workflow\Round.cs" />
     <Compile Include="Workflow\Sum.cs" />
   </ItemGroup>
   <ItemGroup>
diff --git a/Source/Tools/Math/Math/Properties/AssemblyInfo.cs b/Source/Tools/Math/Math/Properties/AssemblyInfo.cs
index 8d207dc..3d412dd 100644
--- a/Source/Tools/Math/Math/Properties/AssemblyInfo.cs
+++ b/Source/Tools/Math/Math/Properties/AssemblyInfo.cs
@@ -32,5 +32,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("8.0.3.6")]
-[assembly: AssemblyFileVersion("8.0.3.6")]
+[assembly: AssemblyVersion("8.0.3.7")]
+[assembly: AssemblyFileVersion("8.0.3.7")]
diff --git a/Source/Tools/Math/Math/Workflow/Round.cs b/Source/Tools/Math/Math/Workflow/Round.cs
new file mode 100644
index 0000000..5c769b6
--- /dev/null
+++ b/Source/Tools/Math/Math/Workflow/Round.cs
@@ -0,0 +1,61 @@
+using System;
+using System.Activities;
+using Microsoft.Xrm.Sdk.Workflow;
+using PZone.Xrm.Workflow;
+
+
+namespace PZone.MathTools.Workflow
+{
+    /// <summary>
+    /// Округление числа по математическим правилам, а также в большую и меньшу стороны.
+    /// </summary>
+    public class Round : WorkflowBase
+    {
+        [Input("Value")]
+        [RequiredArgument]
+        public InArgument<decimal> Value { get; set; }
+        
+        
+        [Input("Digits")]
+        [RequiredArgument]
+        public InArgument<int> Digits { get; set; }
+
+
+        [Output("Round")]
+        public OutArgument<decimal> RoundValue { get; set; }
+
+
+        [Output("Ceiling")]
+        public OutArgument<decimal> CeilingValue { get; set; }
+
+
+        [Output("Floor")]
+        public OutArgument<decimal> FloorValue { get; set; }
+
+
+        protected override void Execute(Context context)
+        {
+            var value = Value.Get(context);
+            var digits = Digits.Get(context);
+
+            if (digits < 0)
+                throw new InvalidWorkflowException("Digits value cannot be negative.");
+            
+            var m = digits == 0 ? 1 : (decimal)Math.Pow(10, digits);
+            var tmp = value * m;
+            var multiplier = value > 0 ? 1 : -1;
+
+            if (tmp % 1 == 0)
+            {
+                RoundValue.Set(context, value);
+                CeilingValue.Set(context, value);
+                FloorValue.Set(context, value);
+                return;
+            }
+
+            RoundValue.Set(context, Math.Abs(Math.Round(value, digits, MidpointRounding.AwayFromZero)) * multiplier);
+            CeilingValue.Set(context, Math.Ceiling(tmp) / m);
+            FloorValue.Set(context, Math.Floor(tmp) / m);
+        }
+    }
+}
\ No newline at end of file