🌟 Primary
| CBSE • Mathematics

Fractions — Like and Unlike

Comparing, adding, subtracting fractions.

1 Lesson 1 MCQ 1 Mnemonic
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Lesson

Fractions — Like and Unlike — Lesson

🍉 Fractions — Like and Unlike 🍎

🌟 Hook: The Mango Party! 🥭

Imagine you and your friends have a big, juicy mango 🍈. You cut it into 4 equal pieces and eat 2 pieces. So, you ate 2/4 of the mango.

Now, your friend has a watermelon 🍉. She cuts it into 6 equal pieces and eats 3 pieces. She ate 3/6 of the watermelon.

Are your mango pieces and her watermelon pieces the same size? How do you compare these fractions? Let's find out!

📚 Core Concepts

What is a fraction? A fraction shows a part of a whole. It has two parts:

  • Numerator (top number): How many parts we have.
  • Denominator (bottom number): How many equal parts the whole is divided into.

Like Fractions: Fractions that have the same denominator (same bottom number).

Example: 3/7 and 5/7 are like fractions because both have denominator 7.

Unlike Fractions: Fractions that have different denominators (different bottom numbers).

Example: 2/5 and 3/8 are unlike fractions because denominators are 5 and 8.

Visual Table: Like vs Unlike Fractions

Type Fraction 1 Fraction 2
Like Fractions 4/9 7/9
Unlike Fractions 3/4 5/6

📝 Key Formulas / Rules

Rule 1: Like fractions have the same denominator.
Example: 5/11 and 7/11
Rule 2: Unlike fractions have different denominators.
Example: 2/3 and 4/5
Rule 3: To compare or add unlike fractions, first make denominators same by finding the Least Common Denominator (LCD).

💡 Did You Know?

Fractions were used in ancient India! The famous mathematician Aryabhata wrote about fractions more than 1,000 years ago! 🇮🇳

📝 Exam Tips

  • Always check if fractions are like or unlike before adding or comparing.
  • Do not forget to find the Least Common Denominator (LCD) for unlike fractions.
  • Write fractions neatly — numerator on top and denominator below, separated by a line.
  • Practice drawing fraction pies or bars to understand parts better.
  • Board exam questions often ask to identify like/unlike fractions or to add like fractions.
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MCQ Practice

Fractions — Like and Unlike — Mcq

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Memory Trick

Fractions — Like and Unlike — Mnemonic

🎉 Fun Mnemonics for Fractions: Like and Unlike! 🎉

  • 1. LIKE FRACTIONS 👫
    “Same Same, But Different Name!”
    When fractions have same denominator, they are like friends!
    Example: 2/5 and 4/5 are like best friends because both have 5 below!
    Hindi Trick: “Neeche same, dosti game!” (नीचे same, दोस्ती game!)

  • 2. UNLIKE FRACTIONS 🚶‍♂️🚶‍♀️
    “Different Bottoms, Different Problems!”
    When fractions have different denominators, they are unlike.
    Example: 3/4 and 2/7 are unlike because 4 ≠ 7.
    Funny Acronym: D.D.D. = “Different Denominator Dilemma!”

  • 3. Fraction Family Song 🎶
    (Sing to the tune of “Twinkle Twinkle Little Star”)
    “Like fractions, same below,
    Easy to add, easy to show.
    Unlike fractions, bottoms change,
    Find LCM, then arrange!”

    Hindi Mix: “Neeche same toh asaan hai kaam,
    Agar alag toh LCM ka naam!”
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