diff --git a/src/CalculatorUITestFramework/ScientificOperatorsPanel.cs b/src/CalculatorUITestFramework/ScientificOperatorsPanel.cs
index 22154f4f..e514ec16 100644
--- a/src/CalculatorUITestFramework/ScientificOperatorsPanel.cs
+++ b/src/CalculatorUITestFramework/ScientificOperatorsPanel.cs
@@ -17,8 +17,9 @@ namespace CalculatorUITestFramework
 
     public enum FEButtonState
     {
-        Normal,
-        Exponential
+        Auto,
+        Scientific,
+        Engineering
     }
 
     /// <summary>
@@ -78,11 +79,14 @@ namespace CalculatorUITestFramework
         public WindowsElement RandButton => this.session.TryFindElementByAccessibilityId("randButton");
         public WindowsElement DmsButton => this.session.TryFindElementByAccessibilityId("dmsButton");
         public WindowsElement DegreesButton => this.session.TryFindElementByAccessibilityId("degreesButton");
-        public WindowsElement FixedToExponentialButton => this.session.TryFindElementByAccessibilityId("ftoeButton");
+        public WindowsElement AutoButton => this.session.TryFindElementByAccessibilityId("autoButton");
+        public WindowsElement SciButton => this.session.TryFindElementByAccessibilityId("sciButton");
+        public WindowsElement EngButton => this.session.TryFindElementByAccessibilityId("engButton");
         public WindowsElement NegateButton => this.session.TryFindElementByAccessibilityId("negateButton");
         public WindowsElement ShiftButton => this.session.TryFindElementByAccessibilityId("shiftButton");
         public WindowsElement TrigFlyout => this.session.TryFindElementByAccessibilityId("Trigflyout");
         public WindowsElement LightDismiss => this.session.TryFindElementByAccessibilityId("Light Dismiss");
+        private WindowsElement AutoSciEngButton => GetNumberFormatButton();
         private WindowsElement DegRadGradButton => GetAngleOperatorButton();
         private WindowsElement GetAngleOperatorButton()
         {
@@ -103,6 +107,25 @@ namespace CalculatorUITestFramework
             throw new NotFoundException("Could not find deg, rad or grad button in page source");
         }
 
+        private WindowsElement GetNumberFormatButton()
+        {
+            string source = this.session.PageSource;
+            if (source.Contains("autoButton"))
+            {
+                return AutoButton;
+            }
+            else if (source.Contains("sciButton"))
+            {
+                return SciButton;
+            }
+            else if (source.Contains("engButton"))
+            {
+                return EngButton;
+            }
+
+            throw new NotFoundException("Could not find auto, sci, or eng button in page source");
+        }
+
         /// <summary>
         /// Set the state of the degrees, radians and gradians buttons.
         /// </summary>
@@ -122,11 +145,19 @@ namespace CalculatorUITestFramework
             }
         }
 
-        public void ResetFEButton(FEButtonState value)
+        public void SetNumberFormat(FEButtonState value)
         {
-            if (this.FixedToExponentialButton.GetAttribute("Toggle.ToggleState") != "0")
+            //set the desired string value for the button
+            string desiredId = value switch
             {
-                FixedToExponentialButton.Click();
+                FEButtonState.Auto => "autoButton",
+                FEButtonState.Scientific => "sciButton",
+                FEButtonState.Engineering => "engButton",
+                _ => throw new NotImplementedException()
+            };
+            while (this.AutoSciEngButton.GetAttribute("AutomationId") != desiredId)
+            {
+                this.AutoSciEngButton.Click();
             }
         }
 
diff --git a/src/CalculatorUITests/CurrencyConverterFunctionalTests.cs b/src/CalculatorUITests/CurrencyConverterFunctionalTests.cs
index e1d8cc41..5c2724fc 100644
--- a/src/CalculatorUITests/CurrencyConverterFunctionalTests.cs
+++ b/src/CalculatorUITests/CurrencyConverterFunctionalTests.cs
@@ -3,6 +3,7 @@
 using CalculatorUITestFramework;
 
 using Microsoft.VisualStudio.TestTools.UnitTesting;
+using System;
 
 namespace CalculatorUITests
 {
diff --git a/src/CalculatorUITests/ScientificModeFunctionalTests.cs b/src/CalculatorUITests/ScientificModeFunctionalTests.cs
index 21e43f0b..b377c938 100644
--- a/src/CalculatorUITests/ScientificModeFunctionalTests.cs
+++ b/src/CalculatorUITests/ScientificModeFunctionalTests.cs
@@ -51,7 +51,7 @@ namespace CalculatorUITests
             }
             CalculatorApp.EnsureCalculatorHasFocus();
             page.ScientificOperators.SetAngleOperator(AngleOperatorState.Degrees);
-            page.ScientificOperators.ResetFEButton(FEButtonState.Normal);
+            page.ScientificOperators.SetNumberFormat(FEButtonState.Auto);
         }
 
         [TestCleanup]
@@ -161,11 +161,22 @@ namespace CalculatorUITests
 
         [TestMethod]
         [Priority(0)]
-        public void SmokeTest_FixedToExponential()
+        public void SmokeTest_ScientificFormat()
         {
-            page.ScientificOperators.FixedToExponentialButton.Click();
+            page.ScientificOperators.SetNumberFormat(FEButtonState.Scientific);
+            page.StandardOperators.NumberPad.Input(0.123);
             page.StandardOperators.EqualButton.Click();
-            Assert.AreEqual("0.e+0", page.CalculatorResults.GetCalculatorResultText());
+            Assert.AreEqual("1.23e-1", page.CalculatorResults.GetCalculatorResultText());
+        }
+
+        [TestMethod]
+        [Priority(0)]
+        public void SmokeTest_EngineeringFormat()
+        {
+            page.ScientificOperators.SetNumberFormat(FEButtonState.Engineering);
+            page.StandardOperators.NumberPad.Input(0.123);
+            page.StandardOperators.EqualButton.Click();
+            Assert.AreEqual("123.e-3", page.CalculatorResults.GetCalculatorResultText());
         }
         #endregion