Maths

Numbers 1 to 100

Class 2

🎯 Learning Objectives

Count forward from 1 to 100.
Count backward from 100 to 1.
Write numbers in order on a number grid.
Find the number that comes just before or just after a given number.
Identify 1-digit and 2-digit numbers.

📖 Let Us Begin!

Ravi has a big jar of marbles. He wants to count them all. He starts from 1 and counts up to 100. Can you count with him?

Numbers from 1 to 100 are all around us — on clocks, on pages of books, on house numbers, on bus numbers, and even on cricket scoreboards! Let us learn to read, write, and use these numbers.

Number chart showing numbers 1 to 100 in a 10x10 grid

Number Grid: 1 to 100

Here is the complete number grid from 1 to 100. Each row has 10 numbers:

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50
51	52	53	54	55	56	57	58	59	60
61	62	63	64	65	66	67	68	69	70
71	72	73	74	75	76	77	78	79	80
81	82	83	84	85	86	87	88	89	90
91	92	93	94	95	96	97	98	99	100

Look at the grid! Numbers in each row increase by 1. Numbers in each column increase by 10. Can you see the pattern?

Counting Forward

We count forward when we go from a smaller number to a bigger number. Each time we add 1.

Example 1: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Example 2: 45, 46, 47, 48, 49, 50
Example 3: 91, 92, 93, 94, 95, 96, 97, 98, 99, 100

Step-by-step: To count forward from any number, just add 1 each time.

Worked Example: Count forward from 76.
76 → 77 → 78 → 79 → 80 → 81 → 82...
After 76 comes 77. After 79 comes 80 (a new ten!).

Objects arranged in groups for counting practice

Counting Backward

We count backward when we go from a bigger number to a smaller number. Each time we take away 1.

Example 1: 10, 9, 8, 7, 6, 5, 4, 3, 2, 1
Example 2: 50, 49, 48, 47, 46, 45
Example 3: 100, 99, 98, 97, 96, 95

Step-by-step: To count backward from any number, subtract 1 each time.

Worked Example: Count backward from 33.
33 → 32 → 31 → 30 → 29 → 28...
Before 33 comes 32. Before 30 comes 29.

Meena counts backward from 20 every night before sleeping: 20, 19, 18... all the way to 1. It helps her fall asleep! Can you try it?

Before and After

The number just before a number is 1 less. The number just after a number is 1 more.

Examples:
Before 25 is 24. After 25 is 26.
Before 60 is 59. After 60 is 61.
Before 100 is 99. After 1 is 2.
Before 50 is 49. After 89 is 90.

Quick trick: "Before" means subtract 1. "After" means add 1.

Number	Just Before	Just After
15	14	16
30	29	31
48	47	49
71	70	72
99	98	100

1-Digit and 2-Digit Numbers

Numbers 1 to 9 have only one digit. They are called 1-digit numbers.

Numbers 10 to 99 have two digits. They are called 2-digit numbers.

The number 100 has three digits!

Examples:
1-digit numbers: 1, 2, 3, 4, 5, 6, 7, 8, 9
2-digit numbers: 10, 11, 12, ... 97, 98, 99
3-digit number: 100

Arjun's house number is 47. It has 2 digits: 4 and 7. Sita's house number is 8. It has only 1 digit. What is your house number? How many digits does it have?

Fun Patterns in the Number Grid

Look at the number grid and find these patterns:

All numbers ending in 0 are in the last column: 10, 20, 30, 40...
All numbers ending in 5 are in the 5th column: 5, 15, 25, 35...
Going down a column, each number is 10 more: 3, 13, 23, 33, 43...
The smallest 1-digit number is 1. The largest is 9.
The smallest 2-digit number is 10. The largest is 99.

📝 Key Words

Word	Meaning
Count forward	Going from a small number to a big number: 1, 2, 3...
Count backward	Going from a big number to a small number: 10, 9, 8...
Before	The number that comes just before (1 less)
After	The number that comes just after (1 more)
Number grid	A chart showing numbers 1 to 100 in rows of 10
1-digit number	A number with one digit (1 to 9)
2-digit number	A number with two digits (10 to 99)

⭐ Key Points to Remember

Numbers 1 to 100 go in order: 1, 2, 3 ... 98, 99, 100.
Counting forward means going up: 1 more each time.
Counting backward means going down: 1 less each time.
The number just before is always 1 less.
The number just after is always 1 more.
Numbers 1–9 are 1-digit numbers. Numbers 10–99 are 2-digit numbers.
The number grid has 10 rows and 10 columns.

✏️ Practice Questions

A. Fill in the Blanks

1. The number after 49 is .

2. The number before 71 is .

3. Count forward: 35, 36, 37, , .

4. Count backward: 20, 19, 18, , .

5. The number just after 99 is .

6. The number just before 80 is .

7. Count forward: 56, 57, , , 60.

8. Count backward: 45, 44, , , 41.

9. The smallest 2-digit number is .

10. The largest 2-digit number is .

B. Choose the Correct Answer

1. Which number comes after 67?

(a) 66(b) 68(c) 70(d) 69

2. Which number comes before 40?

(a) 41(b) 39(c) 38(d) 42

3. What is the biggest number from 1 to 100?

(a) 99(b) 10(c) 100(d) 90

4. How many 1-digit numbers are there?

(a) 10(b) 9(c) 8(d) 100

5. Which number comes just before 51?

(a) 52(b) 49(c) 50(d) 53

C. Short Answer

1. Write any five numbers between 50 and 60.

2. Count backward from 15 to 10. Write the numbers.

3. Meena says the number after 100 is 200. Is she right? What is the correct answer?

4. Write all 1-digit numbers.

5. Arjun's house number is 56. What is the house number just before his? What is the house number just after his?

D. True or False

1. The number after 99 is 100.

2. 50 is a 1-digit number.

3. Counting backward means going from a big number to a small number.

4. The number just before 1 is 0.

5. There are 90 two-digit numbers (from 10 to 99).

E. Match the Following

Column A	Column B
1. Number after 79	(a) 49
2. Number before 50	(b) 100
3. Largest 2-digit number	(c) 80
4. Smallest 1-digit number	(d) 99
5. Largest number from 1 to 100	(e) 1

🎨 Activity: Number Grid Hunt

Draw a 10×10 grid on paper. Write numbers 1 to 100 in the boxes. Then:

Colour all numbers ending in 0 (10, 20, 30...) in red.
Colour all numbers ending in 5 (5, 15, 25...) in blue.
Circle the number that is your age.

What pattern do you see with the red numbers? What about the blue numbers?

Want a printable worksheet? Switch to Worksheet View, then print.

🎯 Learning Objectives

Count forward from 1 to 100.
Count backward from 100 to 1.
Write numbers in order on a number grid.
Find the number that comes just before or just after a given number.
Identify 1-digit and 2-digit numbers.

📖 Let Us Begin!

Ravi has a big jar of marbles. He wants to count them all. He starts from 1 and counts up to 100. Numbers from 1 to 100 are all around us — on clocks, on pages of books, on house numbers, on bus numbers, and even on cricket scoreboards! Let us learn to read, write, and use these numbers.

Number Grid: 1 to 100

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50
51	52	53	54	55	56	57	58	59	60
61	62	63	64	65	66	67	68	69	70
71	72	73	74	75	76	77	78	79	80
81	82	83	84	85	86	87	88	89	90
91	92	93	94	95	96	97	98	99	100

Look at the grid! Numbers in each row increase by 1. Numbers in each column increase by 10.

Counting Forward

We count forward when we go from a smaller number to a bigger number. Each time we add 1.

Example 1: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
Example 2: 45, 46, 47, 48, 49, 50
Example 3: 91, 92, 93, 94, 95, 96, 97, 98, 99, 100
Worked Example: Count forward from 76: 76 → 77 → 78 → 79 → 80 → 81 → 82

Counting Backward

We count backward when we go from a bigger number to a smaller number. Each time we take away 1.

Example 1: 10, 9, 8, 7, 6, 5, 4, 3, 2, 1
Example 2: 50, 49, 48, 47, 46, 45
Example 3: 100, 99, 98, 97, 96, 95
Worked Example: Count backward from 33: 33 → 32 → 31 → 30 → 29 → 28

Meena counts backward from 20 every night before sleeping: 20, 19, 18... all the way to 1!

Before and After

The number just before is 1 less. The number just after is 1 more.

Number	Just Before	Just After
15	14	16
30	29	31
48	47	49
71	70	72
99	98	100

1-Digit and 2-Digit Numbers

Numbers 1–9 are 1-digit numbers. Numbers 10–99 are 2-digit numbers. 100 is a 3-digit number.

Arjun's house number is 47 (2 digits). Sita's house number is 8 (1 digit). What is your house number?

Fun Patterns in the Number Grid

All numbers ending in 0 are in the last column: 10, 20, 30, 40...
All numbers ending in 5 are in the 5th column: 5, 15, 25, 35...
Going down a column, each number is 10 more: 3, 13, 23, 33, 43...
The smallest 2-digit number is 10. The largest is 99.

📝 Key Words

Word	Meaning
Count forward	Going from a small number to a big number: 1, 2, 3...
Count backward	Going from a big number to a small number: 10, 9, 8...
Before	The number that comes just before (1 less)
After	The number that comes just after (1 more)
Number grid	A chart showing numbers 1 to 100 in rows of 10
1-digit number	A number with one digit (1 to 9)
2-digit number	A number with two digits (10 to 99)

⭐ Key Points to Remember

Numbers 1 to 100 go in order: 1, 2, 3 ... 98, 99, 100.
Counting forward means going up: 1 more each time.
Counting backward means going down: 1 less each time.
The number just before is always 1 less.
The number just after is always 1 more.
Numbers 1–9 are 1-digit numbers. Numbers 10–99 are 2-digit numbers.
The number grid has 10 rows and 10 columns.

✏️ Practice Questions

A. Fill in the Blanks

1. The number after 49 is .

2. The number before 71 is .

3. Count forward: 35, 36, 37, , .

4. Count backward: 20, 19, 18, , .

5. The number just after 99 is .

6. The number just before 80 is .

7. Count forward: 56, 57, , , 60.

8. Count backward: 45, 44, , , 41.

9. The smallest 2-digit number is .

10. The largest 2-digit number is .

B. Choose the Correct Answer

1. Which number comes after 67?

(a) 66(b) 68(c) 70(d) 69

2. Which number comes before 40?

(a) 41(b) 39(c) 38(d) 42

3. What is the biggest number from 1 to 100?

(a) 99(b) 10(c) 100(d) 90

4. How many 1-digit numbers are there?

(a) 10(b) 9(c) 8(d) 100

5. Which number comes just before 51?

(a) 52(b) 49(c) 50(d) 53

C. Short Answer

1. Write any five numbers between 50 and 60.

2. Count backward from 15 to 10. Write the numbers.

3. Meena says the number after 100 is 200. Is she right? What is the correct answer?

4. Write all 1-digit numbers.

5. Arjun's house number is 56. What is the house number just before his? What is the house number just after his?

D. True or False

1. The number after 99 is 100.

2. 50 is a 1-digit number.

3. Counting backward means going from a big number to a small number.

4. The number just before 1 is 0.

5. There are 90 two-digit numbers (from 10 to 99).

E. Match the Following

Column A	Column B
1. Number after 79	(a) 49
2. Number before 50	(b) 100
3. Largest 2-digit number	(c) 80
4. Smallest 1-digit number	(d) 99
5. Largest number from 1 to 100	(e) 1

🎨 Activity: Number Grid Hunt

Draw a 10×10 grid on paper. Write numbers 1 to 100 in the boxes. Then:

Colour all numbers ending in 0 (10, 20, 30...) in red.
Colour all numbers ending in 5 (5, 15, 25...) in blue.
Circle the number that is your age.

What pattern do you see?

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Numbers 1 to 100

🎯 Learning Objectives

📖 Let Us Begin!

Number Grid: 1 to 100

Counting Forward

Counting Backward

Before and After

1-Digit and 2-Digit Numbers

Fun Patterns in the Number Grid

📝 Key Words

✏️ Practice Questions

Numbers 1 to 100

Numbers 1 to 100 (continued)

Numbers 1 to 100 (practice)

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50
51	52	53	54	55	56	57	58	59	60
61	62	63	64	65	66	67	68	69	70
71	72	73	74	75	76	77	78	79	80
81	82	83	84	85	86	87	88	89	90
91	92	93	94	95	96	97	98	99	100

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50
51	52	53	54	55	56	57	58	59	60
61	62	63	64	65	66	67	68	69	70
71	72	73	74	75	76	77	78	79	80
81	82	83	84	85	86	87	88	89	90
91	92	93	94	95	96	97	98	99	100

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50
51	52	53	54	55	56	57	58	59	60
61	62	63	64	65	66	67	68	69	70
71	72	73	74	75	76	77	78	79	80
81	82	83	84	85	86	87	88	89	90
91	92	93	94	95	96	97	98	99	100

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50
51	52	53	54	55	56	57	58	59	60
61	62	63	64	65	66	67	68	69	70
71	72	73	74	75	76	77	78	79	80
81	82	83	84	85	86	87	88	89	90
91	92	93	94	95	96	97	98	99	100

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50
51	52	53	54	55	56	57	58	59	60
61	62	63	64	65	66	67	68	69	70
71	72	73	74	75	76	77	78	79	80
81	82	83	84	85	86	87	88	89	90
91	92	93	94	95	96	97	98	99	100

1	2	3	4	5	6	7	8	9	10
11	12	13	14	15	16	17	18	19	20
21	22	23	24	25	26	27	28	29	30
31	32	33	34	35	36	37	38	39	40
41	42	43	44	45	46	47	48	49	50
51	52	53	54	55	56	57	58	59	60
61	62	63	64	65	66	67	68	69	70
71	72	73	74	75	76	77	78	79	80
81	82	83	84	85	86	87	88	89	90
91	92	93	94	95	96	97	98	99	100