diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 394a5042..0436c6ef 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -25,6 +25,44 @@
         android:layout_height="match_parent"
         android:layout_below="@+id/display">
 
+        <TableRow
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1">
+
+            <Button
+                android:id="@+id/btn_modulo"
+                style="@style/MyButtonStyle"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:text="%"/>
+
+            <Button
+                android:id="@+id/btn_power"
+                style="@style/MyButtonStyle"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:text="^"/>
+
+            <Button
+                android:id="@+id/btn_root"
+                style="@style/MyButtonStyle"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:text="√"/>
+
+            <Button
+                android:id="@+id/btn_clear"
+                style="@style/MyButtonStyle"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:layout_weight="1"
+                android:text="C"/>
+        </TableRow>
+
         <TableRow
             android:layout_width="match_parent"
             android:layout_height="match_parent"