Decoration for Festival – Class 2 Maths Chapter 6 Notes & NCERT PDF

Class 2MathematicsChapter 6NCERT book: Joyful Mathematics - Class 2

Notes and a simple summary of Chapter 6 of the NCERT Class 2 Mathematics book, with the official chapter PDF, flashcards, an MCQ quiz and an AI tutor for your doubts.

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Chapter 6: Decoration for Festival

Introduction

Decoration for Festival teaches addition and subtraction of two-digit numbers through a festival story. Rohan and his friends make garlands of 10 flowers each to decorate their homes. Later we meet Mahi and Isha with blocks, a diya seller, Jyoti with her garlands, and children skipping rope. Children use a ginladi, a number line, blocks and the tens–ones method.

What's in this Chapter

  • Garlands and flowers: Rohan has 1 garland and 2 flowers = 10 + 2 = 12; Suwali has 50 + 3 = 53. Together they have 12 + 53 = 65 flowers. Zoha (20) and Javed (43) together have 63.
  • Adding on the ginladi and number line: count 12 ahead of 25 to get 37. 57 + 34 is done as 57 + 30 + 4: 67, 77, 87, then 91. 24 + 43 = 24 + 40 + 3 = 67. On the number line, 23 + 14 = 37 by jumping +10 and then +4.
  • Playing with Blocks: Mahi has 2 tens 3 ones, Isha has 3 tens 8 ones; together 5 tens 11 ones = 6 tens 1 one = 61. "Shifting the tens": 36 + 47 — ones 6 + 7 = 13 (1 ten 3 ones), tens 3 + 4 + 1 = 8, so 83.
  • Word problems: Rahim's runs (43 + 58), Simarpreet's pencils (12 + 36 = 48), Heena's marbles (34 + 57 = 91), money spent at a fair (₹56 + ₹35 = ₹91), people in a bus (36 + 47 = 83).
  • Let us Count Diyas: 75 diyas made, 35 sold — count back 35 steps from 75 to get 40. 32 − 12 = 20.
  • Subtraction on the number line: 19 − 15 = 4 by jumping back 10 and then 5.
  • Blocks for subtraction: 45 − 12 = 33; 37 − 24 = 13.
  • Decorating with Garlands: Jyoti has 46 flowers (4 garlands and 6 loose) and must give 18. She opens one garland: 3 garlands and 16 flowers; 16 − 8 = 8 and 3 − 1 = 2, so 28 are left. Similarly 54 − 28 = 26.
  • Skip the Rope: Aman skipped 14 times and needs 20: 20 − 14 = 6, or 14 + 6 = 20.
  • Fact families, addition and subtraction pyramids, and Hania and Mansi's Gift: ₹78 in the purse, wrapper ₹24 and ribbons ₹37 — spent ₹61, left ₹17.
  • Project Work: check Daljeet's answers and correct the wrong ones.

    • Key Ideas

  • Add ones first, then tens. If ones make 10 or more, shift one ten to the tens place.
  • To subtract when the ones are not enough, open one ten (1 garland = 10 flowers).
  • Addition and subtraction are linked: 14 + 6 = 20 and 20 − 6 = 14.
  • Subtracting 0 leaves the number the same; subtracting a number from itself gives 0.

    • Activities from the Book

  • Counting forward and back on a ginladi or number line.
  • Using blocks (tens and ones) to add and subtract.
  • Skip the Rope game.
  • Checking Daljeet's work.

    • Words to Learn

  • Add (जोड़ना), Total (कुल)
  • Subtract / Take away (घटाना)
  • Left (बचा हुआ)
  • Garland (माला)
  • Diya (दीया)
  • Regroup / Open a ten (दहाई तोड़ना)
  • Fact family (तथ्य परिवार)

    • Tips for Parents & Teachers

  • Use bundles of 10 sticks: open a bundle when you need more ones.
  • Make shopping sums real with coins and small items.
  • Talk about spending all money (subtract a number from itself) or no money (subtract 0).
  • Ask children to make up their own story sums about festivals.

    • Common Mistakes

  • Forgetting to add the carried ten (writing 36 + 47 = 73).
  • Subtracting the smaller digit from the bigger digit in each place (writing 46 − 18 = 32).
  • Mixing up when to add and when to subtract in word problems.

    • 💡 Key Learning Points

    • ✓Add two-digit numbers with and without regrouping (shifting a ten).
    • ✓Subtract two-digit numbers with and without regrouping (opening a ten).
    • ✓Add and subtract on a ginladi and a number line by jumping in tens and ones.
    • ✓Solve simple word problems about flowers, diyas, money and people.
    • ✓See how addition and subtraction are related through fact families.

    👨‍🏫 Teaching Tips

    • →Use real garlands or strings of 10 beads with loose beads to show tens and ones.
    • →Show adding on the number line as one jump of 10 and small jumps of 1.
    • →Use blocks to show why 13 ones become 1 ten and 3 ones.
    • →Act out Jyoti opening a garland when she does not have enough loose flowers.
    • →Discuss subtracting zero and subtracting a number from itself with real-life money examples.
    • →Let children check Daljeet's answers and explain the mistakes.
    • →Play Skip the Rope and write both a subtraction and an addition sentence for the missing skips.

    📋 Assessment Questions

    1. Can the child add 36 + 47 correctly, shifting the ten?
    2. Can the child subtract 46 − 18 by opening a ten?
    3. Can the child solve a two-step money problem like Hania and Mansi's gift?
    4. Can the child show 57 + 34 on a number line?
    5. Can the child write the fact family for 20, 30 and 50?

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    All chapters in Joyful Mathematics - Class 2

    1. 1. A Day at the Beach
    2. 2. Shapes Around Us
    3. 3. Fun with Numbers
    4. 4. Shadow Story
    5. 5. Playing with Lines
    6. 6. Decoration for Festival
    7. 7. Rani's Gift
    8. 8. Grouping and Sharing
    9. 9. Which Season is it?
    10. 10. Fun at the Fair
    11. 11. Data Handling