What is Exactly (Precise)?

S0-SA3-0773

Grade Level:

Pre-School – Class 2

All domains without exception

Definition

What is it?

Exactly (or precise) means something is accurate and correct without any doubt or guesswork. It means there is no room for error, and the measurement or statement is perfectly true.

Simple Example

Quick Example

Imagine you tell your friend, 'My house is exactly 5 minutes away from school.' This means it takes precisely 5 minutes, not 4 minutes, not 6 minutes, but 5 minutes. There is no confusion about the time.

Worked Example

Step-by-Step

QUESTION: An auto-rickshaw driver says the fare to the market is exactly ₹50. You pay him a ₹100 note. How much change should you get exactly?

STEP 1: Identify the total amount paid: ₹100.
---STEP 2: Identify the exact fare: ₹50.
---STEP 3: To find the change, subtract the fare from the amount paid.
---STEP 4: Calculation: ₹100 - ₹50 = ₹50.
---STEP 5: The exact change you should get is ₹50.

ANSWER: You should get exactly ₹50 as change.

Why It Matters

Being exact is super important in many subjects like Science, Maths, and even daily life. Engineers need exact measurements to build bridges, doctors need exact doses for medicine, and scientists need precise data for experiments. This skill helps you solve problems accurately and make reliable decisions.

Common Mistakes

MISTAKE: Confusing 'about' or 'around' with 'exactly'. For example, saying 'The movie starts exactly around 3 PM.' | CORRECTION: 'Exactly' means no approximation. The movie either starts exactly at 3 PM or around 3 PM, but not both at the same time.

MISTAKE: Giving a rounded number when an exact number is needed. For example, if a recipe needs 250 grams of flour, saying 'about 200-300 grams' is not exact. | CORRECTION: When 'exactly' is required, provide the specific, correct number or measurement.

MISTAKE: Assuming 'exact' means 'perfect' or 'best'. An exact answer can still be wrong if the calculation was incorrect. | CORRECTION: 'Exact' refers to precision and accuracy in the given context, not necessarily the 'best' outcome. It means the answer is precisely what it should be based on the information.

Practice Questions

Try It Yourself

QUESTION: If a cricket match is scheduled to start exactly at 7:30 PM, and you reach the stadium at 7:25 PM, how many minutes before the exact start time did you arrive? | ANSWER: 5 minutes

QUESTION: Your mobile data plan gives you exactly 1.5 GB of data per day. If you use 0.75 GB in the morning, how much data do you have left for the rest of the day, exactly? | ANSWER: 0.75 GB

QUESTION: A tailor needs exactly 2.25 meters of cloth for one shirt. If he has a roll of cloth that is exactly 10 meters long, how many full shirts can he make, and how much cloth will be left over exactly? | ANSWER: 4 shirts can be made. Exactly 1 meter of cloth will be left over (10 - 4*2.25 = 10 - 9 = 1).

MCQ

Quick Quiz

Which of these statements uses 'exactly' correctly?

The train arrived about exactly 10 minutes late.

The temperature today is exactly 30 degrees Celsius.

I have exactly some money in my wallet.

The total score was exactly around 150 runs.

The Correct Answer Is:

Option B uses 'exactly' correctly because '30 degrees Celsius' is a precise measurement. Options A, C, and D combine 'exactly' with words like 'about', 'some', or 'around', which indicate approximation, making them incorrect.

Real World Connection

In the Real World

In Indian Railways, train schedules aim for exact arrival and departure times to ensure smooth operations and passenger convenience. When you book a ticket online, the platform shows you the exact fare, including taxes, so you know precisely how much to pay. Even in cooking, following a recipe exactly for ingredients like spices can make a big difference in the taste!

Key Vocabulary

Key Terms

ACCURATE: free from error or defect | PRECISE: marked by exactness and accuracy of measurement or description | MEASUREMENT: the size, length, or amount of something | DATA: facts and statistics collected together for reference or analysis | APPROXIMATE: close to the actual, but not exact

What's Next

What to Learn Next

Now that you understand 'exactly', you can explore concepts like 'estimation' and 'rounding'. These are opposite to 'exact' but equally important for quick calculations and understanding when an exact answer isn't always necessary. Keep practicing to master both!