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Integers Class 7 PPT

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 Page 1


I N T E G E R S
C l a s s - 7
Page 2


I N T E G E R S
C l a s s - 7
Let’s Understand Negative Numbers
Ethan wants to take 3 cupcakes for a picnic with 4 friends.
What he is gonna do now?
Page 3


I N T E G E R S
C l a s s - 7
Let’s Understand Negative Numbers
Ethan wants to take 3 cupcakes for a picnic with 4 friends.
What he is gonna do now?
Let’s Understand Negative Numbers
To solve the problem, he borrows 1 cupcake from his sister.
Initially, he has 3 cupcakes, but after borrowing, he has 4 cupcakes.
At the picnic, he gives away all 4 cupcakes.
+
Page 4


I N T E G E R S
C l a s s - 7
Let’s Understand Negative Numbers
Ethan wants to take 3 cupcakes for a picnic with 4 friends.
What he is gonna do now?
Let’s Understand Negative Numbers
To solve the problem, he borrows 1 cupcake from his sister.
Initially, he has 3 cupcakes, but after borrowing, he has 4 cupcakes.
At the picnic, he gives away all 4 cupcakes.
+
Let’s Understand Negative Numbers
Now, he has 0 cupcakes, but remember, 1 was borrowed.
So, Ethan actually has -1 cupcakes.
If he buys 3 more cupcakes the next day, he'll have 2 cupcakes
after returning 1 to his sister.
Page 5


I N T E G E R S
C l a s s - 7
Let’s Understand Negative Numbers
Ethan wants to take 3 cupcakes for a picnic with 4 friends.
What he is gonna do now?
Let’s Understand Negative Numbers
To solve the problem, he borrows 1 cupcake from his sister.
Initially, he has 3 cupcakes, but after borrowing, he has 4 cupcakes.
At the picnic, he gives away all 4 cupcakes.
+
Let’s Understand Negative Numbers
Now, he has 0 cupcakes, but remember, 1 was borrowed.
So, Ethan actually has -1 cupcakes.
If he buys 3 more cupcakes the next day, he'll have 2 cupcakes
after returning 1 to his sister.
Let’s Understand Negative Numbers
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FAQs on Integers Class 7 PPT

1. What are integers in mathematics?
Ans. Integers are a set of whole numbers that include both positive and negative numbers, along with zero. They do not include fractions or decimals.
2. How are integers used in real-life situations?
Ans. Integers are used in various real-life situations such as measuring temperatures (positive and negative values), calculating distances (positive and negative directions), and keeping track of financial transactions (positive for income and negative for expenses).
3. Can integers be classified as rational numbers?
Ans. Yes, integers can be classified as rational numbers. Rational numbers are numbers that can be expressed as a fraction, and since integers can be expressed as a fraction with a denominator of 1, they fall under this category.
4. How do we perform operations on integers?
Ans. Operations on integers include addition, subtraction, multiplication, and division. When adding or subtracting integers, we consider their signs, and when multiplying or dividing integers, we follow specific rules to determine the sign of the result.
5. Are there any real-life examples where integers are not applicable?
Ans. While integers are widely used in many real-life situations, there are certain scenarios where they may not be applicable. For example, when dealing with measurements involving fractions or decimals, integers may not provide precise results. Additionally, in complex mathematical calculations, integers alone may not suffice.
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