diff --git a/08_calculator/calculator.js b/08_calculator/calculator.js
index c22e8d2..2b97217 100644
--- a/08_calculator/calculator.js
+++ b/08_calculator/calculator.js
@@ -1,6 +1,6 @@
-const add = function() {
-	
-};
+ const add=(num1,num2)=>{
+        return num1+num2;
+    }
 
 const subtract = function() {
 	
@@ -14,13 +14,26 @@ const multiply = function() {
 
 };
 
-const power = function() {
-	
+const power = function(num,power) {
+	let rez=1;
+for(let i=1;i<=power;i++){
+	rez*=num;	
 };
+return rez
+}
 
-const factorial = function() {
-	
-};
+
+const factorial = (num) =>{
+    let res=1;
+  
+        for(i=1;i<=num;i++){
+               res*=i;
+        }
+
+
+    return res;
+    }
+    
 
 // Do not edit below this line
 module.exports = {
diff --git a/08_calculator/calculator.spec.js b/08_calculator/calculator.spec.js
index dc317ec..bcd0fdf 100644
--- a/08_calculator/calculator.spec.js
+++ b/08_calculator/calculator.spec.js
@@ -5,11 +5,11 @@ describe('add', () => {
 		expect(calculator.add(0,0)).toBe(0);
 	});
 
-	test.skip('adds 2 and 2', () => {
+	test('adds 2 and 2', () => {
 		expect(calculator.add(2,2)).toBe(4);
 	});
 
-	test.skip('adds positive numbers', () => {
+	test('adds positive numbers', () => {
 		expect(calculator.add(2,6)).toBe(8);
 	});
 });
@@ -49,29 +49,29 @@ describe('multiply', () => {
 });
 
 describe('power', () => {
-	test.skip('raises one number to the power of another number', () => {
+	test('raises one number to the power of another number', () => {
 		expect(calculator.power(4,3)).toBe(64); // 4 to third power is 64
 	});
 });
 
 describe('factorial', () => {
-	test.skip('computes the factorial of 0', () => {
+	test('computes the factorial of 0', () => {
 		expect(calculator.factorial(0)).toBe(1); // 0! = 1
 	});
 
-	test.skip('computes the factorial of 1', () => {
+	test('computes the factorial of 1', () => {
 		expect(calculator.factorial(1)).toBe(1);
 	});
 
-	test.skip('computes the factorial of 2', () => {
+	test('computes the factorial of 2', () => {
 		expect(calculator.factorial(2)).toBe(2);
 	});
 
-	test.skip('computes the factorial of 5', () => {
+	test('computes the factorial of 5', () => {
 		expect(calculator.factorial(5)).toBe(120);
 	});
 
-	test.skip('computes the factorial of 10', () => {
+	test('computes the factorial of 10', () => {
 		expect(calculator.factorial(10)).toBe(3628800);
 	});
 });