diff --git a/Calculator/Pratik1968/index.html b/Calculator/Pratik1968/index.html
index 5f4df68aa..84edf2fe6 100644
--- a/Calculator/Pratik1968/index.html
+++ b/Calculator/Pratik1968/index.html
@@ -17,7 +17,9 @@
         power:"7",
         clear:"8",
         backspace:"9",
-        decimal:"."
+        decimal:".",
+        sqrt:"10",
+        negate:"11"
     }
   </script>
   <script src="main.js"></script>
@@ -30,6 +32,7 @@
 <div class="grid grid-cols-4 gap-2 ">
 <button class="flex items-center justify-center bg-[#4E505F] rounded-lg p-3" onclick="functionButton(functionVar.clear)">C</button>
 <button class="flex items-center justify-center bg-[#4E505F] rounded-lg p-3" onclick="functionButton(functionVar.power)">^</button>
+<button class="flex items-center justify-center bg-[#4E505F] rounded-lg p-3" onclick="functionButton(functionVar.sqrt)">√</button>
 <button class="flex items-center justify-center bg-[#4E505F] rounded-lg p-3" onclick="functionButton(functionVar.percentage)">%</button>
 <button class="flex items-center justify-center bg-[#4B5EFC] rounded-lg p-3" onclick="functionButton(functionVar.division)">/</button>
 <button class="flex items-center justify-center bg-[#2E2F38] rounded-lg p-3" onclick="NumberButtonClick(7)">7</button>
@@ -45,6 +48,7 @@
 <button class="flex items-center justify-center bg-[#2E2F38] rounded-lg p-3" onclick="NumberButtonClick(3)">3</button>
 <button class="flex items-center justify-center bg-[#4B5EFC] rounded-lg p-3" onclick="functionButton(functionVar.add)">+</button>
 <button class="flex items-center justify-center bg-[#2E2F38] rounded-lg p-3" onclick="functionButton(functionVar.decimal)">.</button>
+<button class="flex items-center justify-center bg-[#2E2F38] rounded-lg p-3" onclick="functionButton(functionVar.negate)">+/-</button>
 <button class="flex items-center justify-center bg-[#2E2F38] rounded-lg p-3" onclick="NumberButtonClick(0)">0</button>
 <button class="flex items-center justify-center bg-[#2E2F38] rounded-lg flex items-center" onclick="functionButton(functionVar.backspace)"><span class="material-symbols-outlined">
     backspace
diff --git a/Calculator/Pratik1968/main.js b/Calculator/Pratik1968/main.js
index 8ef9c5b53..c98e6287d 100644
--- a/Calculator/Pratik1968/main.js
+++ b/Calculator/Pratik1968/main.js
@@ -74,6 +74,19 @@ function functionButton(Function) {
             if (lastChar !== "^")
                 value += "^";
             break;
+        case functionVar.sqrt:
+            let num = parseFloat(value);
+            if (isNaN(num)) {
+                return;
+            }
+            if (num < 0) {
+                value = "请输入非负数";
+                setInput();
+                value = "";
+                return;
+            }
+            value = Math.sqrt(num).toString();
+            break;
         case functionVar.clear:
             value = "";
             break;
@@ -84,6 +97,12 @@ function functionButton(Function) {
             if (lastChar !== "." && !value.includes('.'))
                 value += ".";
             break;
+        case functionVar.negate:
+            let numToNegate = parseFloat(value);
+            if (!isNaN(numToNegate)) {
+                value = (numToNegate * -1).toString();
+            }
+            break;
     }
 
 
diff --git a/Calculator/bhpranit08/index.html b/Calculator/bhpranit08/index.html
index aa6899d35..2355597a1 100644
--- a/Calculator/bhpranit08/index.html
+++ b/Calculator/bhpranit08/index.html
@@ -14,6 +14,7 @@ <h1>The Calculator</h1>
         <div class="row">
             <button class="mega-btn" onclick="clearScreen()">AC</button>
             <button class="mega-btn" onclick="deleteEl()">DEL</button>
+            <button class="mega-btn" onclick="squareRoot()">√</button>
         </div>
         <div class="row">
             <button onclick="addItem('7')" class="num-btn">7</button>
diff --git a/Calculator/bhpranit08/script.js b/Calculator/bhpranit08/script.js
index aaa951975..be4cfd354 100644
--- a/Calculator/bhpranit08/script.js
+++ b/Calculator/bhpranit08/script.js
@@ -58,4 +58,27 @@ const equal = () => {
         realInput.value = "Error"
         inputEl.value = "Error"
     }
+}
+
+const squareRoot = () => {
+    const inputEl = document.getElementById("input-el")
+    const realInput = document.getElementById("real-input-el")
+    
+    const currentValue = realInput.value
+    
+    if (currentValue === "" || currentValue === "Error") {
+        return
+    }
+    
+    const number = parseFloat(currentValue)
+    
+    if (number < 0) {
+        inputEl.value = "请输入非负数"
+        realInput.value = ""
+        return
+    }
+    
+    const result = Math.sqrt(number)
+    realInput.value = result.toString()
+    inputEl.value = result.toString()
 }
\ No newline at end of file
diff --git a/Calculator/yash_pokharna/index.html b/Calculator/yash_pokharna/index.html
index 897d7c425..3a33a3511 100644
--- a/Calculator/yash_pokharna/index.html
+++ b/Calculator/yash_pokharna/index.html
@@ -13,7 +13,8 @@
             <button onclick="clearDisplay()">C</button>
             <button onclick="addOperator('/')">/</button>
             <button onclick="addOperator('*')">*</button>
-            <button onclick="deleteLast()">DEL</button><br>
+            <button onclick="deleteLast()">DEL</button>
+            <button onclick="calculateSqrt()">√</button><br>
             <button onclick="appendNumber('7')">7</button>
             <button onclick="appendNumber('8')">8</button>
             <button onclick="appendNumber('9')">9</button>
diff --git a/Calculator/yash_pokharna/script.js b/Calculator/yash_pokharna/script.js
index a35f062c8..f0cad4e8c 100644
--- a/Calculator/yash_pokharna/script.js
+++ b/Calculator/yash_pokharna/script.js
@@ -36,3 +36,19 @@ function calculate() {
         alert("Error: Invalid operation.");
     }
 }
+
+function calculateSqrt() {
+    const value = parseFloat(display.value);
+    
+    if (isNaN(value)) {
+        alert("Error: 请输入有效数字");
+        return;
+    }
+    
+    if (value < 0) {
+        display.value = "请输入非负数";
+        return;
+    }
+    
+    display.value = Math.sqrt(value);
+}
\ No newline at end of file
diff --git a/Calculator/yash_pokharna/style.css b/Calculator/yash_pokharna/style.css
index ff47df328..408715b86 100644
--- a/Calculator/yash_pokharna/style.css
+++ b/Calculator/yash_pokharna/style.css
@@ -29,7 +29,7 @@ body {
 
 .buttons {
     display: grid;
-    grid-template-columns: repeat(4, 1fr);
+    grid-template-columns: repeat(5, 1fr);
     gap: 10px;
 }