What is the Ones Place?

S0-SA1-0016

Grade Level:

Class 1

Maths, Computing

Definition

What is it?

The Ones Place is the position of the rightmost digit in any whole number. It tells you how many single units or 'ones' are present in that number. For example, in the number 25, the digit 5 is in the Ones Place.

Simple Example

Quick Example

Imagine you bought 7 laddoos. The number 7 has only one digit, and that digit is in the Ones Place. It simply means you have 7 single laddoos.

Worked Example

Step-by-Step

Let's find the digit in the Ones Place for the number 349.
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Step 1: Write down the number: 349
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Step 2: Identify the rightmost digit. In 349, the digit furthest to the right is 9.
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Step 3: This rightmost digit is always in the Ones Place.
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Answer: The digit in the Ones Place for 349 is 9.

Why It Matters

Understanding the Ones Place is crucial for basic arithmetic like addition and subtraction, especially when 'carrying over' or 'borrowing'. It's fundamental for computer programming to handle number values and for engineers designing systems that process quantities, ensuring calculations are always correct.

Common Mistakes

MISTAKE: Confusing the Ones Place with the Tens Place. For example, identifying '2' as the Ones Place digit in 27. | CORRECTION: The Ones Place is always the very last digit on the right. In 27, '7' is in the Ones Place.

MISTAKE: Thinking that the Ones Place only applies to single-digit numbers. | CORRECTION: Every whole number, no matter how big, has a digit in the Ones Place. For 1234, the Ones Place digit is 4.

MISTAKE: Forgetting that zero can also be in the Ones Place. | CORRECTION: If a number ends with zero, like 50, then 0 is the digit in the Ones Place. It means there are zero single units.

Practice Questions

Try It Yourself

QUESTION: What is the digit in the Ones Place for the number 8? | ANSWER: 8

QUESTION: In a cricket match, a team scored 175 runs. Which digit is in the Ones Place of their total score? | ANSWER: 5

QUESTION: If a shop sold 2345 samosas today, and then 12 more samosas, what would be the digit in the Ones Place of the total samosas sold? | ANSWER: 7 (2345 + 12 = 2357, the Ones Place digit is 7)

MCQ

Quick Quiz

Which digit is in the Ones Place of the number 403?

None of the above

The Correct Answer Is:

The Ones Place is the rightmost digit of any whole number. In 403, the digit 3 is on the far right, making it the digit in the Ones Place.

Real World Connection

In the Real World

When you check your mobile phone balance, say ₹149, the '9' is in the Ones Place. This helps your bank's computer systems understand the exact amount of single rupees you have. Similarly, when a delivery app shows a distance of 15 km, the '5' is in the Ones Place, representing 5 single kilometers.

Key Vocabulary

Key Terms

PLACE VALUE: The value of a digit based on its position in a number | DIGIT: A single symbol used to write numbers (0, 1, 2, 3, 4, 5, 6, 7, 8, 9) | WHOLE NUMBER: Numbers without fractions or decimals (0, 1, 2, 3, ...)

What's Next

What to Learn Next

Now that you understand the Ones Place, you're ready to learn about the Tens Place! This will help you understand how numbers grow bigger and how each digit's position changes its value.