4th Grade || Addition And Subtraction || Online Test || JMO || Junior Math Olympiad

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Unlock the Secrets of Addition and Subtraction! ➕➖

Hello, brilliant 4th graders! 🌟 Are you ready to explore the world of Addition and Subtraction? These two math superheroes 🦸‍♂️🦸‍♀️ are here to help you solve puzzles, play games, and even count your pocket money! Let’s dive into this fun journey! 🎉


What is Addition? ➕

Addition is about putting numbers together to find the total. Think of it as combining things to see how much you have in total. 🤔

📖 Example:

  • You have 35 marbles 🏐, and your friend gives you 42 more. How many marbles do you have?
    • 35 + 42 = 77 🥳

Fun Tip: The numbers you add are called addends, and the result is the sum. 🧮


What is Subtraction? ➖

Subtraction is the opposite of addition. It’s about taking something away to find what’s left. Imagine having 20 candies 🍬, and you eat 5. How many are left? 🤔

📖 Example:

  • 20 - 5 = 15
  • Start with the bigger number, then count backward to find the answer!

Fun Tip: The result of subtraction is called the difference. 💡


Why Are Addition and Subtraction Important? 🧐

These skills help you:

  • Count money 💵.
  • Solve everyday problems 🛒.
  • Play math games 🕹️.

They’re like your secret weapons for real-life adventures! 🦸


Let’s Solve Some Problems Together! 🧩

Addition:

  1. You collected 28 stickers 🖼️, and your friend gave you 19 more. How many do you have in total?

    • 28 + 19 = 47 🎉
  2. A library has 124 books 📚, and they buy 76 more. How many books are there now?

    • 124 + 76 = 200 📖

Subtraction:

  1. You have 50 crayons 🖍️ but lose 15. How many are left?

    • 50 - 15 = 35 🎨
  2. A park has 96 birds 🐦, but 34 fly away. How many are left?

    • 96 - 34 = 62 🐦

Tricks to Make Addition and Subtraction Easy! 🧠✨

For Addition:

  • Line Them Up: Write numbers in columns to add easily.
  • Break It Down: Split numbers into tens and ones.
    Example: 46 + 32 = (40 + 30) + (6 + 2) = 78.

For Subtraction:

  • Borrow When Needed: If the top number is smaller, borrow from the next place value.
    Example: 52 - 28 = Borrow 1 from the tens.

  • Use a Number Line: Count backward to subtract quickly.


Fun Games to Play! 🎲

  1. Treasure Hunt:

    • Collect 25 coins 🪙 and find 15 more. How many do you have now?
  2. Subtraction Safari:

    • Start with 50 animals 🐘 and remove 23. How many are still on your safari?
  3. Race to the Total:

    • Add numbers on flashcards and see who gets the highest total first! 🏃‍♂️

Challenge Yourself! 🏆

Addition Problems:

  1. 125 + 374 = ?
  2. 89 + 46 = ?

Subtraction Problems:

  1. 563 - 127 = ?
  2. 238 - 94 = ?

Write your answers in a notebook 📓 and see how fast you can solve them!


Addition and Subtraction Are Math Superpowers! 🌟

With practice, you’ll master these skills and solve problems in a snap! So, grab your pencils ✏️ and start practicing today!

Tell us in the comments: What’s the most fun thing you’ve added or subtracted recently? 🤩

Happy learning, math wizards! 🪄✨




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