Advanced Addition and Subtraction


Objective:

  • Solve addition and subtraction problems up to 50.
  • Solve two-digit addition and subtraction with carrying and borrowing.
  • Apply addition and subtraction in daily life situations.
  • Develop problem-solving and mental calculation skills.

Materials Needed:

  • Counters, beads, or small toys
  • Number flashcards
  • Whiteboard and markers
  • Worksheets for daily practice
  • Chart paper with sums

Week 1: Building Strong Foundations

Day 1: Review of Addition

Objective: Recall addition facts up to 20.
Activities:

  1. Warm-up: Ask students to count objects in class.
  2. Demonstration: Show sums like 7 + 5 using counters.
  3. Board Practice: Write sums 4 + 6, 9 + 3, 8 + 2.
  4. Pair Activity: Students solve sums using counters.
  5. Discussion: Ask students to explain how they solved.

Inline Questions (more examples):

  • 5 + 6 = ?
  • 9 + 8 = ?
  • 7 + 7 = ?
  • You have 6 pencils, and your friend gives 4. How many pencils now?
  • Add 10 + 9.
  • 3 + 5 + 2 = ?
  • Add 4 + 5 + 6 using fingers.
  • I have 7 apples, and I buy 5 more. How many apples now?

Day 2: Review of Subtraction

Objective: Recall subtraction facts up to 20.
Activities:

  1. Warm-up: Show 15 candies; take away some and ask students to count left.
  2. Board Demonstration: 12 – 5, 9 – 3, 10 – 6.
  3. Hands-on: Students use objects to subtract.
  4. Pair Work: Practice subtraction with real objects.

Inline Questions (more examples):

  • 8 – 3 = ?
  • 15 – 7 = ?
  • I have 12 chocolates. Eat 5. How many left?
  • 10 – 4 = ?
  • 9 – 6 = ?
  • If 6 birds fly away from 14 birds, how many are left?
  • 18 – 9 = ?
  • Solve 7 – 3 + 2 = ?

Day 3: Addition up to 30

Objective: Add numbers up to 30 using objects and mental math.
Activities:

  1. Demonstrate with objects: 14 + 7, 18 + 5.
  2. Students solve sums in notebooks and orally.
  3. Group activity: Use beads to show sums.

Inline Questions:

  • 12 + 8 = ?
  • 15 + 6 = ?
  • 14 + 9 = ?
  • Add 10 + 11 = ?
  • I have 13 pencils, and my friend gives 7. Total pencils?
  • 18 + 9 = ?
  • 7 + 15 + 3 = ?
  • You have 11 candies and get 12 more. How many now?

Day 4: Subtraction up to 30

Objective: Subtract numbers up to 30.
Activities:

  1. Demonstrate subtraction with objects: 20 – 7, 25 – 9.
  2. Mental math practice: Solve 18 – 6, 14 – 5 orally.
  3. Pair activity: Students explain their method.

Inline Questions:

  • 20 – 8 = ?
  • 18 – 7 = ?
  • 25 – 9 = ?
  • 12 – 5 = ?
  • I have 17 candies and eat 6. Remaining?
  • 14 – 9 = ?
  • 19 – 8 = ?
  • 15 – 7 + 3 = ?

Day 5: Word Problems with Addition

Objective: Solve simple addition word problems.
Activities:

  1. Read a story: “Ram has 8 marbles. He gets 7 more. How many now?”
  2. Solve on board using counters.
  3. Students solve 5 word problems in notebooks.

Inline Questions:

  • Rina has 5 pencils, buys 6 more. Total pencils?
  • A shop has 12 apples and buys 9 more. How many now?
  • I have 7 red balloons and 8 blue balloons. How many balloons?
  • Add 6 + 9 + 5 = ?
  • You have 10 chocolates, friend gives 7, then you buy 5 more. Total?
  • 14 + 6 = ?
  • 8 + 12 + 5 = ?
  • If there are 11 birds and 9 more come, total birds?

Week 2: Moving to Advanced Concepts

Day 6: Word Problems with Subtraction

Objective: Solve subtraction word problems.
Activities:

  1. Read story: “There are 20 birds. 7 fly away. How many remain?”
  2. Demonstrate on board using objects.
  3. Students solve 5–6 problems in notebooks.

Inline Questions:

  • 15 – 7 = ?
  • I have 18 candies, eat 9. How many left?
  • There are 25 pens. 6 are taken away. Remaining pens?
  • 12 – 5 + 3 = ?
  • 30 – 12 = ?
  • Subtract 19 – 8 = ?
  • 20 – 7 + 4 = ?
  • You had 22 chocolates, gave 9 to a friend. How many left?

Day 7: Addition with Carrying (Two-digit + Two-digit)

Objective: Learn addition with carrying.
Activities:

  1. Demonstrate 18 + 15 on board.
  2. Students practice 5–6 sums in notebooks.
  3. Pair activity: Solve with objects.

Inline Questions:

  • 23 + 19 = ?
  • 27 + 14 = ?
  • 35 + 17 = ?
  • Add 29 + 15 = ?
  • 16 + 28 = ?
  • 12 + 19 + 7 = ?
  • 21 + 18 = ?
  • I have 24 pencils, friend gives 19 more. Total?

Day 8: Subtraction with Borrowing (Two-digit – Two-digit)

Objective: Learn subtraction with borrowing.
Activities:

  1. Demonstrate 34 – 17 on board.
  2. Students solve 5–6 sums in notebooks.
  3. Pair activity: Use objects to visualize.

Inline Questions:

  • 42 – 28 = ?
  • 36 – 19 = ?
  • 51 – 27 = ?
  • 45 – 29 = ?
  • 38 – 17 = ?
  • Subtract 54 – 28 = ?
  • 61 – 34 = ?
  • 49 – 26 = ?

Day 9: Mixed Addition and Subtraction

Objective: Solve mixed addition and subtraction problems.
Activities:

  1. Demonstrate on board: 12 + 9 – 5.
  2. Students solve 5–6 mixed sums orally.
  3. Worksheet: 6 mixed problems with carrying/borrowing.

Inline Questions:

  • 15 + 18 – 9 = ?
  • 12 + 7 – 5 = ?
  • I have 25 chocolates. Eat 7, friend gives 8. How many now?
  • 18 + 9 – 6 = ?
  • 23 + 12 – 14 = ?
  • 10 + 11 – 6 = ?
  • 14 + 8 – 9 = ?
  • 20 + 15 – 12 = ?

Day 10: Application & Assessment

Objective: Apply addition and subtraction in real life; assess understanding.
Activities:

  1. Discuss real-life scenarios (shopping, sharing candies, birds, pencils).
  2. Short assessment: 10–12 problems.
  3. Group activity: Solve a “story problem challenge.”

Inline Questions:

  • Buy 12 candies, friend gives 8. Total?
  • 30 birds, 12 fly away. Remaining?
  • 23 + 17 – 10 = ?
  • I have 14 apples, buy 7 more, eat 5. How many left?
  • Add 19 + 13, then subtract 7 = ?
  • 15 + 18 – 9 = ?
  • You have 22 pencils, give 8 to a friend. How many left?
  • 27 + 14 – 15 = ?