Maths

Addition

Class 2

🎯 Learning Objectives

Add two 1-digit numbers.
Add a 1-digit number to a 2-digit number.
Add two 2-digit numbers using the vertical (column) method.
Use a number line to add numbers.
Solve simple word problems using addition.

📖 Let Us Begin!

Ravi has 12 mangoes. His mother gives him 5 more. How many mangoes does he have now? We add to find the total!

Addition means putting things together to find how many in all. The sign for addition is + (plus). The answer we get is called the sum.

12 + 5 = 17. Ravi now has 17 mangoes!

Visual showing objects being added together — mangoes in two groups combining

Adding on a Number Line

A number line helps us add by jumping forward (to the right).

Example: 7 + 4 = ?
Step 1: Start at 7 on the number line.
Step 2: Jump 4 steps forward: 8, 9, 10, 11.
Step 3: You land on 11.
So 7 + 4 = 11.

Number line showing addition — jumping forward from 7 by 4 steps to reach 11

More examples on number line:
5 + 3 = 8 (start at 5, jump 3 forward)
9 + 6 = 15 (start at 9, jump 6 forward)
12 + 4 = 16 (start at 12, jump 4 forward)

Adding 1-Digit Numbers

When both numbers have only 1 digit (1 to 9), we can add them easily:

Examples:
3 + 5 = 8 6 + 7 = 13 9 + 4 = 13 8 + 8 = 16
4 + 6 = 10 7 + 5 = 12 9 + 9 = 18 2 + 8 = 10

Meena has 6 red bangles and 7 green bangles. How many bangles in all? 6 + 7 = 13 bangles!

Adding 2-Digit Numbers (Vertical Method)

Write the numbers one below the other. Add the ones first, then the tens.

Worked Example 1: 23 + 15 = ?
Step 1: Write 23 on top, 15 below (line up ones under ones, tens under tens).
Step 2: Add ones: 3 + 5 = 8
Step 3: Add tens: 2 + 1 = 3
Answer: 38

Worked Example 2: 34 + 22 = ?
Ones: 4 + 2 = 6. Tens: 3 + 2 = 5. Answer: 56

Worked Example 3: 41 + 36 = ?
Ones: 1 + 6 = 7. Tens: 4 + 3 = 7. Answer: 77

Remember: We can add in any order! 3 + 5 = 5 + 3 = 8. This is called the "order property" of addition.

Addition with Carrying (Regrouping)

Sometimes the ones add up to more than 9. Then we "carry" 1 ten to the tens column.

Worked Example: 27 + 15 = ?
Step 1: Add ones: 7 + 5 = 12. Write 2 in ones place, carry 1 to tens.
Step 2: Add tens: 2 + 1 + 1 (carried) = 4.
Answer: 42

More examples with carrying:
18 + 14 = 32 36 + 27 = 63 45 + 38 = 83

Word Problems

Addition is used in daily life. Look for words like "in all", "total", "altogether", "how many more".

Problem 1: Arjun has ₹25. His father gives him ₹12 more. How much money does Arjun have now?
Solution: 25 + 12 = ₹37

Problem 2: There are 18 boys and 14 girls in a class. How many students are there in all?
Solution: 18 + 14 = 32 students

Problem 3: Sita scored 23 runs in the first match and 34 runs in the second match. What is her total score?
Solution: 23 + 34 = 57 runs

📝 Key Words

Word	Meaning
Addition	Putting numbers together to find the total
Sum	The answer we get after adding
Plus (+)	The sign we use for addition
Number line	A line with numbers in order, used to count and add
Vertical method	Writing numbers one below the other to add
Carry / Regroup	Moving 1 ten to the tens column when ones add up to more than 9

⭐ Key Points to Remember

Addition means putting numbers together.
The answer in addition is called the sum.
We can add in any order: 3 + 5 = 5 + 3 = 8.
In vertical addition, always add ones first, then tens.
Adding 0 to any number gives the same number: 7 + 0 = 7.
If ones add up to more than 9, carry 1 to the tens place.
Look for clue words: "in all", "total", "altogether", "how many".

Finished learning? Now test what you know!

🎯 Quick Quiz — Test Yourself!

Answer these questions right here. You get instant feedback — no paper needed!

Score: 0 / 8

1. 5 + 3 = ?

5 + 3 = 8.

2. 24 + 15 = ?

24 + 15 = 39.

3. When we add, the answer is called the:

The answer in addition is called the sum (or total).

4. 7 + 0 = ?

Adding 0 to a number does not change it: 7 + 0 = 7.

5. 9 + 7 = ?

9 + 7 = 16.

6. 30 + 20 = ?

30 + 20 = 50.

7. Meena has 27 marbles and Ravi gives her 18 more. How many does she have now?

27 + 18 = 45 marbles.

8. 60 + 40 = ?

60 + 40 = 100.

✏️ Practice Questions

A. Fill in the Blanks

1. 6 + 7 =

2. 14 + 5 =

3. 21 + 13 =

4. 30 + 20 =

5. 45 + 4 =

6. 18 + 14 =

7. 27 + 15 =

8. 36 + 27 =

9. 9 + 0 =

10. 44 + 33 =

B. Choose the Correct Answer

1. What is 8 + 9?

(a) 16(b) 17(c) 18(d) 15

2. What is 32 + 15?

(a) 47(b) 45(c) 48(d) 43

3. Meena has 24 beads. She gets 11 more. How many in all?

(a) 13(b) 35(c) 34(d) 36

4. What is 19 + 16?

(a) 34(b) 35(c) 25(d) 36

5. 25 + 0 = ?

(a) 0(b) 250(c) 25(d) 26

C. Word Problems

1. Ravi has 33 stamps. Sita gives him 14 more. How many stamps does Ravi have now?

2. There are 22 red roses and 18 yellow roses in a garden. How many roses are there in all?

3. Add vertically: 42 + 25 = ___. Show your working.

4. Arjun saved ₹28 in January and ₹35 in February. How much did he save in total?

5. Use the number line to add: 9 + 6 = ___. Show your jumps.

D. True or False

1. 5 + 3 = 3 + 5.

2. The sum of 0 and 15 is 0.

3. In vertical addition, we add tens first.

4. 7 + 8 = 15.

5. Addition means taking away.

E. Match the Following

Column A (Sum)	Column B (Answer)
1. 6 + 9	(a) 50
2. 23 + 14	(b) 15
3. 30 + 20	(c) 37
4. 18 + 18	(d) 60
5. 45 + 15	(e) 36

🎨 Activity: Addition Dice Game

Roll two dice (or pick two number cards from 1 to 9). Add the two numbers. Write the addition sum. Do this 5 times. Which sum is the biggest?

Example: I rolled 4 and 7. 4 + 7 = 11.

Challenge: Now try adding two 2-digit numbers! Pick any two numbers between 10 and 50 and add them using the vertical method.

Want to review the lesson again?

🎯 Learning Objectives

Add two 1-digit numbers.
Add a 1-digit number to a 2-digit number.
Add two 2-digit numbers using the vertical (column) method.
Use a number line to add numbers.
Solve simple word problems using addition.

📖 Let Us Begin!

Ravi has 12 mangoes. His mother gives him 5 more. How many mangoes does he have now? We add to find the total! Addition means putting things together to find how many in all. The sign for addition is + (plus). The answer we get is called the sum. 12 + 5 = 17. Ravi now has 17 mangoes!

Visual showing objects being added together

Adding on a Number Line

A number line helps us add by jumping forward (to the right).

Example: 7 + 4 = ? Start at 7. Jump 4 steps forward: 8, 9, 10, 11. Answer: 11.
5 + 3 = 8 | 9 + 6 = 15 | 12 + 4 = 16

Adding 1-Digit Numbers

3 + 5 = 8 6 + 7 = 13 9 + 4 = 13 8 + 8 = 16
4 + 6 = 10 7 + 5 = 12 9 + 9 = 18 2 + 8 = 10

Meena has 6 red bangles and 7 green bangles. 6 + 7 = 13 bangles in all!

Adding 2-Digit Numbers (Vertical Method)

Write numbers one below the other. Add ones first, then tens.

23 + 15: Ones: 3+5=8. Tens: 2+1=3. Answer: 38
34 + 22: Ones: 4+2=6. Tens: 3+2=5. Answer: 56
41 + 36: Ones: 1+6=7. Tens: 4+3=7. Answer: 77

Addition with Carrying (Regrouping)

When ones add up to more than 9, carry 1 ten to the tens column.

27 + 15: Ones: 7+5=12 (write 2, carry 1). Tens: 2+1+1=4. Answer: 42
18 + 14 = 32 36 + 27 = 63 45 + 38 = 83

Word Problems

1. Arjun has ₹25. His father gives him ₹12 more. Total: 25 + 12 = ₹37
2. 18 boys + 14 girls = 32 students
3. Sita scored 23 + 34 = 57 runs

Look for clue words: "in all", "total", "altogether", "how many".

📝 Key Words

Word	Meaning
Addition	Putting numbers together to find the total
Sum	The answer we get after adding
Plus (+)	The sign we use for addition
Number line	A line with numbers in order, used to count and add
Vertical method	Writing numbers one below the other to add
Carry / Regroup	Moving 1 ten to the tens column when ones > 9

⭐ Key Points to Remember

Addition means putting numbers together.
The answer in addition is called the sum.
We can add in any order: 3 + 5 = 5 + 3 = 8.
In vertical addition, always add ones first, then tens.
Adding 0 to any number gives the same number: 7 + 0 = 7.
If ones add up to more than 9, carry 1 to the tens place.
Clue words: "in all", "total", "altogether", "how many".

✏️ Practice Questions

A. Fill in the Blanks

1. 6 + 7 =

2. 14 + 5 =

3. 21 + 13 =

4. 30 + 20 =

5. 45 + 4 =

6. 18 + 14 =

7. 27 + 15 =

8. 36 + 27 =

9. 9 + 0 =

10. 44 + 33 =

B. Choose the Correct Answer

1. What is 8 + 9?

(a) 16(b) 17(c) 18(d) 15

2. What is 32 + 15?

(a) 47(b) 45(c) 48(d) 43

3. Meena has 24 beads. She gets 11 more. How many in all?

(a) 13(b) 35(c) 34(d) 36

4. What is 19 + 16?

(a) 34(b) 35(c) 25(d) 36

5. 25 + 0 = ?

(a) 0(b) 250(c) 25(d) 26

C. Word Problems

1. Ravi has 33 stamps. Sita gives him 14 more. How many stamps does Ravi have now?

2. There are 22 red roses and 18 yellow roses in a garden. How many roses are there in all?

3. Add vertically: 42 + 25 = ___. Show your working.

4. Arjun saved ₹28 in January and ₹35 in February. How much did he save in total?

5. Use the number line to add: 9 + 6 = ___. Show your jumps.

D. True or False

1. 5 + 3 = 3 + 5.

2. The sum of 0 and 15 is 0.

3. In vertical addition, we add tens first.

4. 7 + 8 = 15.

5. Addition means taking away.

E. Match the Following

Column A (Sum)	Column B (Answer)
1. 6 + 9	(a) 50
2. 23 + 14	(b) 15
3. 30 + 20	(c) 37
4. 18 + 18	(d) 60
5. 45 + 15	(e) 36

🎨 Activity: Addition Dice Game

Roll two dice (or pick two number cards from 1 to 9). Add the two numbers. Write the addition sum. Do this 5 times:

1. + =

2. + =

3. + =

4. + =

5. + =

Challenge: Add two 2-digit numbers: + =

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Addition

🎯 Learning Objectives

📖 Let Us Begin!

Adding on a Number Line

Adding 1-Digit Numbers

Adding 2-Digit Numbers (Vertical Method)

Addition with Carrying (Regrouping)

Word Problems

📝 Key Words

🎯 Quick Quiz — Test Yourself!

✏️ Practice Questions

Addition

Addition (continued)

Addition (practice)