IndianTechnoEra: Reading Two-Digit Numbers

Reading Two-Digit Numbers

We know that two-digit numbers are made from tens and ones. Now we will learn how to read and write these numbers correctly.

Understanding the tens and ones helps us understand what a two-digit number represents.

Learning Objectives

• Recognise two-digit numbers.
• Identify the tens and ones in a number.
• Read two-digit numbers correctly.
• Write two-digit numbers correctly.
• Connect a number with its tens and ones.

What Is a Two-Digit Number?

A two-digit number has two digits.

The first digit represents tens and the second digit represents ones.

34

3 tens + 4 ones

34 = 30 + 4

Reading Numbers

We read two-digit numbers using their number names.

21

Twenty-one

35

Thirty-five

48

Forty-eight

Connecting Numbers with Tens and Ones

When we see a number, we can break it into tens and ones.

52

5 tens = 50
2 ones = 2

52 = 50 + 2

Reading Numbers from 10 to 20

The numbers from 10 to 20 are also two-digit numbers.

10 — Ten

11 — Eleven

12 — Twelve

13 — Thirteen

14 — Fourteen

15 — Fifteen

16 — Sixteen

17 — Seventeen

18 — Eighteen

19 — Nineteen

20 — Twenty

Reading Numbers from 21 to 99

After 20, two-digit numbers continue by combining the tens and ones.

21 — Twenty-one

32 — Thirty-two

45 — Forty-five

67 — Sixty-seven

89 — Eighty-nine

Writing Two-Digit Numbers

When someone tells us a number, we should write its digits in the correct positions.

Thirty-four

34

Fifty-six

56

Finding a Number from Its Parts

6 tens and 3 ones

63

Sixty-three

7 tens and 5 ones

75

Seventy-five

Common Mistakes

• Writing the digits in the wrong order.
• Confusing the tens digit with the ones digit.
• Reading a two-digit number as two separate numbers.
• Spelling number names incorrectly.

Practice

1. Read the number 24.

2. Write the number name of 31.

3. Write the number for Forty-two.

4. How many tens and ones are in 57?

5. Write the number name of 68.

Try It Yourself

Choose any two-digit number. Say the number aloud, identify its tens and ones, and then write its number name.

Example: 43 → 4 tens + 3 ones → Forty-three

Quick Revision

• A two-digit number has a tens digit and a ones digit.
• The left digit represents tens.
• The right digit represents ones.
• 34 means 3 tens and 4 ones.
• 34 is read as thirty-four.

What Comes Next?

Now that you can read, write and understand two-digit numbers, you are ready to compare them.