diff --git a/samples/calc-02/index.js b/samples/calc-02/index.js
index 5093406..06ae7ab 100644
--- a/samples/calc-02/index.js
+++ b/samples/calc-02/index.js
@@ -237,22 +237,8 @@ function execute(name) {
 			if (calc.isEditing) {
 				calc.inputValue = calc.inputValue.startsWith('-') ? calc.inputValue.slice(1) : `-${calc.inputValue}`;
 			} else {
-				calc.push(calc.pop() * -1);
+				calc.command('neg');
 			}
-		} else if (name === 'pow10') {
-			pushEditingValueIfNeeded();
-			const exponent = calc.stack[0];
-			calc.remove(0);
-			calc.push(10);
-			calc.push(exponent);
-			calc.command('pow');
-		} else if (name === 'exp') {
-			pushEditingValueIfNeeded();
-			const exponent = calc.stack[0];
-			calc.remove(0);
-			calc.push(Math.E);
-			calc.push(exponent);
-			calc.command('pow');
 		} else {
 			pushEditingValueIfNeeded();
 			calc.command(name);
diff --git a/src/rpn-calculator.js b/src/rpn-calculator.js
index 1572948..21ef2b4 100644
--- a/src/rpn-calculator.js
+++ b/src/rpn-calculator.js
@@ -49,6 +49,18 @@ class RpnCalculator {
       aliases: ['^', 'y^x'],
       execute: (calc, a, b) => Math.pow(a, b),
     },
+    pow10: {
+      category: 'Arithmetic',
+      argCount: 1,
+      aliases: ['10^x'],
+      execute: (calc, a) => Math.pow(10, a),
+    },
+    exp: {
+      category: 'Arithmetic',
+      argCount: 1,
+      aliases: ['e^x'],
+      execute: (calc, a) => Math.exp(a),
+    },
     root: {
       category: 'Arithmetic',
       argCount: 2,
@@ -195,7 +207,7 @@ class RpnCalculator {
   static getOperationsByCategory() {
     return {
       Stack: ['dup', 'drop', 'swap', 'clear', 'enter'],
-      Arithmetic: ['add', 'sub', 'mul', 'div', 'mod', 'pow', 'root', 'sqr', 'neg', 'sqrt', 'recip', 'log', 'ln'],
+      Arithmetic: ['add', 'sub', 'mul', 'div', 'mod', 'pow', 'pow10', 'exp', 'root', 'sqr', 'neg', 'sqrt', 'recip', 'log', 'ln'],
       Trigonometry: ['sin', 'cos', 'tan', 'asin', 'acos', 'atan'],
     };
   }