diff --git a/README.md b/README.md
index b108ad8..42903cf 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,15 @@ $ npm start
 5. To run the test suite, execute the following command:
 ```bash
 $ npm run test
+
+## Dependencies
+    "body-parser": "^1.19.0",
+    "express": "^4.17.1",
+    "assert": "^2.0.0",
+    "chai": "^4.2.0",
+    "chai-http": "^4.3.0",
+    "mocha": "^6.2.0",
+    "should": "^13.2.3"
 ```
 
 ## Contributing
diff --git a/routes/route.js b/routes/route.js
index cb8a48c..c8c4897 100644
--- a/routes/route.js
+++ b/routes/route.js
@@ -1,15 +1,43 @@
-const express = require("express");
+var  express = require("express");
+var router = express.Router();
 
-const router = express.Router();
 
+//check the running status of the app
 router.get("/check", (req, res) => {
   res.send("Congratulations! Your app works! :)");
 });
 
+// addition 2 numbers
 router.post("add", (req, res) => {
-  // Add logic here
+  let param1 = req.body.param1;
+  let param2 = req.body.param2;
+
+  res.json({
+    result:param1+ param2,
+    meta: {
+      success: true,
+      message: `Calculated ${param1} + ${param2}`,
+      code: 200
+    }
+  });
 });
 
+//multiplication of 2 number
+router.post("multi", (req, res) => {
+  let param1 = req.body.param1;
+  let param2 = req.body.param2;
+
+  res.json({
+    result: param1 + param2,
+    meta: {
+      success: true,
+      message: `Calculated ${param1} * ${param2}`,
+      code: 200
+    }
+  });
+});
+
+//power 2 number
 router.post("/power", (req, res) => {
   let param1 = req.body.param1;
   let param2 = req.body.param2;
@@ -24,6 +52,8 @@ router.post("/power", (req, res) => {
   });
 });
 
+
+//factorial 2 number
 router.post("/factorial", (req, res) => {
   const { param1 } = req.body;
 
@@ -61,6 +91,7 @@ router.post("/factorial", (req, res) => {
   }
 });
 
+//calcuate ceil value
 router.post("/ceil", (req, res) => {
   try {
     const { param1 } = req.body;
diff --git a/test/tests.js b/test/tests.js
index b22dc69..234a7d4 100644
--- a/test/tests.js
+++ b/test/tests.js
@@ -1,11 +1,14 @@
-const chai = require("chai");
-const chaiHttp = require("chai-http");
-const app = require("../app");
-const assert = require("assert");
-const should = chai.should();
+var chai = require("chai");
+var chaiHttp = require("chai-http");
+var app = require("../app");
+var assert = require("assert");
+var should = chai.should();
 
 chai.use(chaiHttp);
 
+// REST Used for calculation
+
+
 describe("----------START TEST FOR app.js----------", () => {
   it("Checks if the App is working", done => {
     chai
@@ -44,6 +47,50 @@ describe("----------START TEST FOR app.js----------", () => {
       });
   });
 
+  it("Checks the POST /math/add", done => {
+    chai
+      .request(app)
+      .post("/math/add")
+      .send({ param1: 3, param2: 2 })
+      .end((err, res) => {
+        if (err) {
+          done(err);
+          process.exit(1);
+        } else {
+          res.body.result.should.be.a("number");
+          res.body.meta.success.should.be.a("boolean");
+          res.body.meta.message.should.be.a("string");
+          res.body.meta.code.should.be.a("number");
+
+          res.body.result.should.equal(5);
+
+          done();
+        }
+      });
+  });
+
+  it("Checks the POST /math/multi", done => {
+    chai
+      .request(app)
+      .post("/math/multi")
+      .send({ param1: 3, param2: 2 })
+      .end((err, res) => {
+        if (err) {
+          done(err);
+          process.exit(1);
+        } else {
+          res.body.result.should.be.a("number");
+          res.body.meta.success.should.be.a("boolean");
+          res.body.meta.message.should.be.a("string");
+          res.body.meta.code.should.be.a("number");
+
+          res.body.result.should.equal(6);
+
+          done();
+        }
+      });
+  });
+
   it("Checks the POST /math/power", done => {
     chai
       .request(app)