diff --git a/implement-and-rewrite-tests/implement-tests-with-node-test/1-get-angle-type.test.js b/implement-and-rewrite-tests/implement-tests-with-node-test/1-get-angle-type.test.js
index cf50f6cad..0710e6c39 100644
--- a/implement-and-rewrite-tests/implement-tests-with-node-test/1-get-angle-type.test.js
+++ b/implement-and-rewrite-tests/implement-tests-with-node-test/1-get-angle-type.test.js
@@ -10,3 +10,30 @@ test("Classifies right angles", () => {
   const right = getAngleType(90);
   assert.equal(right, "Right angle");
 });
+
+test("Classifies acute angles", () => {
+  const acute = getAngleType(45);
+  assert.equal(acute, "Acute angle");
+});
+
+test("classifies obtuse angles", () => {
+  const obtuse = getAngleType(120);
+  assert.equal(obtuse, "Obtuse angle");
+});
+
+test("classifies straight angles", () => {
+  const straight = getAngleType(180);
+  assert.equal(straight, "Straight angle");
+});
+test("classifies reflex angles", () => {
+  const reflex = getAngleType(270);
+  assert.equal(reflex, "Reflex angle");
+});
+test("classifies invalid negative angles", () => {
+  const invalid = getAngleType(-10);
+  assert.equal(invalid, "Invalid angle");
+});
+test("classifies angles greater than 360 as invalid", () => {
+  const invalid = getAngleType(400);
+  assert.equal(invalid, "Invalid angle");
+});
diff --git a/implement-and-rewrite-tests/implement-tests-with-node-test/3-get-card-value.test.js b/implement-and-rewrite-tests/implement-tests-with-node-test/3-get-card-value.test.js
index f5092d9b1..3b8ebe28c 100644
--- a/implement-and-rewrite-tests/implement-tests-with-node-test/3-get-card-value.test.js
+++ b/implement-and-rewrite-tests/implement-tests-with-node-test/3-get-card-value.test.js
@@ -9,8 +9,34 @@ test("Valid single-digit card", () => {
   assert.equal(getCardValue("9♠"), 9);
 });
 
-test("Arbitrary non-card string", () => {
-  assert.throws(() => getCardValue("invalid"), /Expected a number followed by a suit, but got "invalid"/, "Expected clear error");
+test("Ace is worth 11", () => {
+  assert.equal(getCardValue("A♠"), 11);
+});
+test("Jack is worth 10", () => {
+  assert.equal(getCardValue("J♠"), 10);
+});
+
+test("Queen is worth 10", () => {
+  assert.equal(getCardValue("Q♠"), 10);
+});
+
+test("King is worth 10", () => {
+  assert.equal(getCardValue("K♠"), 10);
+});
+
+test("Ten is worth 10", () => {
+  assert.equal(getCardValue("10♠"), 10);
+});
+
+test("Missing suit is invalid", () => {
+  assert.throws(() => getCardValue("A"));
 });
 
 // TODO: What other invalid card cases can you think of?
+test("Arbitrary non-card string", () => {
+  assert.throws(
+    () => getCardValue("invalid"),
+    /Expected a number followed by a suit, but got "invalid"/,
+    "Expected clear error"
+  );
+});
diff --git a/implement-and-rewrite-tests/implement/1-get-angle-type.js b/implement-and-rewrite-tests/implement/1-get-angle-type.js
index 8a6fba050..2fcbad01e 100644
--- a/implement-and-rewrite-tests/implement/1-get-angle-type.js
+++ b/implement-and-rewrite-tests/implement/1-get-angle-type.js
@@ -17,5 +17,24 @@
 // execute the code to ensure all tests pass.
 
 export function getAngleType(angle) {
-  // TODO: Implement this function
+  if (angle === 90) {
+    return "Right angle";
+  }
+  if (angle > 0 && angle < 90) {
+    return "Acute angle";
+  }
+
+  if (angle > 90 && angle < 180) {
+    return "Obtuse angle";
+  }
+
+  if (angle === 180) {
+    return "Straight angle";
+  }
+
+  if (angle > 180 && angle < 360) {
+    return "Reflex angle";
+  }
+
+  return "Invalid angle";
 }
diff --git a/implement-and-rewrite-tests/implement/2-is-proper-fraction.js b/implement-and-rewrite-tests/implement/2-is-proper-fraction.js
index f983800f0..0b4a4d686 100644
--- a/implement-and-rewrite-tests/implement/2-is-proper-fraction.js
+++ b/implement-and-rewrite-tests/implement/2-is-proper-fraction.js
@@ -14,5 +14,5 @@
 // execute the code to ensure all tests pass.
 
 export function isProperFraction(numerator, denominator) {
-  // TODO: Implement this function
+  return numerator < denominator;
 }
diff --git a/implement-and-rewrite-tests/implement/3-get-card-value.js b/implement-and-rewrite-tests/implement/3-get-card-value.js
index 9614ab1ee..2eb2e4415 100644
--- a/implement-and-rewrite-tests/implement/3-get-card-value.js
+++ b/implement-and-rewrite-tests/implement/3-get-card-value.js
@@ -24,5 +24,26 @@
 // execute the code to ensure all tests pass.
 
 export function getCardValue(card) {
-  // TODO: Implement this function
+  const suit = card.slice(-1);
+  const rank = card.slice(0, -1);
+
+  if (!["♠", "♥", "♦", "♣"].includes(suit)) {
+    throw new Error(`Expected a number followed by a suit, but got "${card}"`);
+  }
+
+  if (rank === "A") {
+    return 11;
+  }
+
+  if (rank === "J" || rank === "Q" || rank === "K") {
+    return 10;
+  }
+
+  const value = Number(rank);
+
+  if (!isNaN(value) && value >= 2 && value <= 10) {
+    return value;
+  }
+
+  throw new Error(`Expected a number followed by a suit, but got "${card}"`);
 }
diff --git a/implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js b/implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js
index e0ba786ab..2c0564e89 100644
--- a/implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js
+++ b/implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js
@@ -12,7 +12,30 @@ test(`should return "Acute angle" when (0 < angle < 90)`, () => {
 });
 
 // Case 2: Right angle
+test('should return "right angle" when angle is 90', () => {
+  expect(getAngleType(90)).toEqual("Right angle");
+});
 // Case 3: Obtuse angles
+test('should return "Obtuse angle" when (90 < angle < 180)', () => {
+  expect(getAngleType(91)).toEqual("Obtuse angle");
+  expect(getAngleType(120)).toEqual("Obtuse angle");
+  expect(getAngleType(179)).toEqual("Obtuse angle");
+});
 // Case 4: Straight angle
+test('should return "Straight angle" when angle is 180', () => {
+  expect(getAngleType(180)).toEqual("Straight angle");
+});
 // Case 5: Reflex angles
+test('should return "Reflex angle" when (180 < angle < 360)', () => {
+  expect(getAngleType(181)).toEqual("Reflex angle");
+  expect(getAngleType(270)).toEqual("Reflex angle");
+  expect(getAngleType(359)).toEqual("Reflex angle");
+});
 // Case 6: Invalid angles
+
+test('should return "Invalid angle" for invalid angles', () => {
+  expect(getAngleType(-1)).toEqual("Invalid angle");
+  expect(getAngleType(0)).toEqual("Invalid angle");
+  expect(getAngleType(360)).toEqual("Invalid angle");
+  expect(getAngleType(400)).toEqual("Invalid angle");
+});
diff --git a/implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js b/implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js
index 5d49e2d8b..803c60e9b 100644
--- a/implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js
+++ b/implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js
@@ -6,3 +6,30 @@ import { isProperFraction } from "../implement/2-is-proper-fraction.js";
 test(`should return false when denominator is zero`, () => {
   expect(isProperFraction(1, 0)).toEqual(false);
 });
+test("should return true for a proper fraction", () => {
+  expect(isProperFraction(1, 2)).toEqual(true);
+});
+
+test("should return false when numerator equals denominator", () => {
+  expect(isProperFraction(5, 5)).toEqual(false);
+});
+
+test("should return false when numerator is greater than denominator", () => {
+  expect(isProperFraction(7, 3)).toEqual(false);
+});
+
+test("should return true when numerator is zero", () => {
+  expect(isProperFraction(0, 5)).toEqual(true);
+});
+
+test("should return false for negative numerator and denominator", () => {
+  expect(isProperFraction(-1, -2)).toEqual(false);
+});
+
+test("should return true for negative numerator and positive denominator", () => {
+  expect(isProperFraction(-1, 2)).toEqual(true);
+});
+
+test("should return false for positive numerator and negative denominator", () => {
+  expect(isProperFraction(1, -2)).toEqual(false);
+});
diff --git a/implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js b/implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js
index a6de5a82a..b49ddd84d 100644
--- a/implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js
+++ b/implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js
@@ -9,10 +9,34 @@ test(`Should return 11 when given an ace card`, () => {
 
 // Suggestion: Group the remaining test data into these categories:
 //   Number Cards (2-10)
+test("Should return 2 when given a 2 card", () => {
+  expect(getCardValue("2♠")).toEqual(2);
+});
+
+test("Should return 10 when given a 10 card", () => {
+  expect(getCardValue("10♠")).toEqual(10);
+});
 //   Face Cards (J, Q, K)
+test("Should return 10 when given a Jack", () => {
+  expect(getCardValue("J♠")).toEqual(10);
+});
+
+test("Should return 10 when given a Queen", () => {
+  expect(getCardValue("Q♠")).toEqual(10);
+});
+
+test("Should return 10 when given a King", () => {
+  expect(getCardValue("K♠")).toEqual(10);
+});
 //   Invalid Cards
+test("Should throw an error for invalid text", () => {
+  expect(() => getCardValue("invalid")).toThrow();
+});
+
+test("Should throw an error when suit is missing", () => {
+  expect(() => getCardValue("A")).toThrow();
+});
 
 // To learn how to test whether a function throws an error as expected in Jest,
 // please refer to the Jest documentation:
 // https://jestjs.io/docs/expect#tothrowerror
-