diff --git a/src/exercises/TP1/NumberValidation/index.test.ts b/src/exercises/TP1/NumberValidation/index.test.ts
new file mode 100644
index 0000000..65452cf
--- /dev/null
+++ b/src/exercises/TP1/NumberValidation/index.test.ts
@@ -0,0 +1,57 @@
+import { NumberValidation } from "./index";
+
+describe("Test NumberValidation", () => {
+    const numberValidator = new NumberValidation();
+
+    it.each([
+        { input: "123", expected: 123 },
+        { input: "123.45", expected: 123.45 },
+        { input: "-123", expected: -123 }
+    ])(
+        "should validate number %s correctly",
+        ({ input, expected }) => {
+            const result = numberValidator.validateNumber(input);
+            expect(result).toEqual(expected);
+            console.log(`Test with input = ${input}, expected = ${expected}, result = ${result}`);
+        }
+    );
+
+    it.each([
+        { input: "123", expected: 123 },
+        { input: "-123", expected: -123 }
+    ])(
+        "should validate integer %s correctly",
+        ({ input, expected }) => {
+            const result = numberValidator.validateInteger(input);
+            expect(result).toEqual(expected);
+            console.log(`Test with input = ${input}, expected = ${expected}, result = ${result}`);
+        }
+    );
+
+    it.each([
+        { input: "123", expected: 123 },
+        { input: "123.45", expected: 123.45 }
+    ])(
+        "should validate positive number %s correctly",
+        ({ input, expected }) => {
+            const result = numberValidator.validatePositive(input);
+            expect(result).toEqual(expected);
+            console.log(`Test with input = ${input}, expected = ${expected}, result = ${result}`);
+        }
+    );
+
+    it("should throw a validation exception when input is not a number", () => {
+        const input = "abc";
+        expect(() => numberValidator.validateNumber(input)).toThrowError("La valeur doit représenter un nombre");
+    });
+
+    it("should throw a validation exception when input is not an integer", () => {
+        const input = "123.45";
+        expect(() => numberValidator.validateInteger(input)).toThrowError("La valeur doit représenter un nombre entier");
+    });
+
+    it("should throw a validation exception when input is not a positive number", () => {
+        const input = "-123";
+        expect(() => numberValidator.validatePositive(input)).toThrowError("La valeur doit représenter un nombre positif");
+    });
+});
diff --git a/src/exercises/TP1/NumberValidation/index.ts b/src/exercises/TP1/NumberValidation/index.ts
new file mode 100644
index 0000000..bad1e0c
--- /dev/null
+++ b/src/exercises/TP1/NumberValidation/index.ts
@@ -0,0 +1,32 @@
+export class ValidationException extends Error {
+  constructor(message: string) {
+    super(message);
+    this.name = 'ValidationException';
+  }
+}
+
+export class NumberValidation {
+  validateNumber(input: string): number {
+    const num = parseFloat(input);
+    if (isNaN(num)) {
+      throw new ValidationException('La valeur doit représenter un nombre');
+    }
+    return num;
+  }
+
+  validateInteger(input: string): number {
+    const num = this.validateNumber(input);
+    if (!Number.isInteger(num)) {
+      throw new ValidationException('La valeur doit représenter un nombre entier');
+    }
+    return num;
+  }
+
+  validatePositive(input: string): number {
+    const num = this.validateNumber(input);
+    if (num <= 0) {
+      throw new ValidationException('La valeur doit représenter un nombre positif');
+    }
+    return num;
+  }
+}
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