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What is 1 + 4?
Grade Level:
Class 1
Maths, Computing, AI
Definition
What is it?
1 + 4 is a simple addition problem. It asks us to combine one item with four other items to find the total number of items. This basic operation helps us count things together.
Simple Example
Quick Example
Imagine you have 1 samosa on your plate. Your friend gives you 4 more samosas. To find out how many samosas you have in total, you would calculate 1 + 4.
Worked Example
Step-by-Step
Let's find the answer to 1 + 4 using a number line.
Step 1: Start at the number 1 on the number line.
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Step 2: Since we are adding 4, we need to move 4 steps forward (to the right) from 1.
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Step 3: Move 1 step from 1, you reach 2.
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Step 4: Move another step from 2, you reach 3.
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Step 5: Move another step from 3, you reach 4.
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Step 6: Move the final step from 4, you reach 5.
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So, 1 + 4 = 5.
Why It Matters
Understanding simple addition like 1 + 4 is the first step towards complex calculations used in computing and AI. Engineers use addition to design circuits, and data scientists use it to sum up large datasets. Even game developers use addition to calculate scores!
Common Mistakes
MISTAKE: Counting only the '4' and forgetting the '1' | CORRECTION: Always start counting from the first number and then add the second number to it.
MISTAKE: Subtracting instead of adding | CORRECTION: Remember the '+' sign means to combine or put together, not to take away.
MISTAKE: Miscounting while using fingers or objects | CORRECTION: Double-check your count. Use a number line or draw dots to make sure you count accurately.
Practice Questions
Try It Yourself
QUESTION: If you have 1 cricket ball and your friend gives you 4 more, how many balls do you have? | ANSWER: 5
QUESTION: On a bus, 1 person is sitting. Then 4 more people get on the bus. How many people are on the bus now? | ANSWER: 5
QUESTION: Your mom bought 1 kg of potatoes. Your dad then bought 2 kg of onions and 2 kg of tomatoes. How many total kilograms of vegetables did they buy? | ANSWER: 5 kg (1 + 2 + 2)
MCQ
Quick Quiz
What is the sum of 1 and 4?
3
4
5
6
The Correct Answer Is:
C
When you combine 1 and 4, you get a total of 5. Options A, B, and D are incorrect because they do not represent the correct sum.
Real World Connection
In the Real World
Every time you pay for something using UPI, the app adds up the prices of different items you buy. For example, if you buy a chai for 10 rupees and a biscuit packet for 40 rupees, the app quickly calculates 10 + 40 to show your total bill. Or when a delivery rider for Swiggy or Zomato takes 1 order and then gets 4 more, they are doing quick mental addition.
Key Vocabulary
Key Terms
ADDITION: The process of combining numbers to find a total | SUM: The result of an addition problem | TOTAL: The whole amount or number | NUMBER LINE: A straight line with numbers marked at equal intervals
What's Next
What to Learn Next
Great job understanding 1 + 4! Next, you can learn about adding larger numbers and then move on to subtraction. These skills are like building blocks for all of maths!
