Скачать или смотреть Q6) Ex-1.3 Class 7 Maths Chapter 1 Integers | Maths Class 7 CBSE By Apni ClassRoom Deepak Garg

Q6) Ex-1.3 Class 7 Maths Chapter 1 Integers | Maths Class 7 CBSE By Apni ClassRoom Deepak Garg

Hello students, in this chapter you are going to learn a very good concepts related to the Integers.
I will first tell you what is exactly a Integers means which is very important to know for understanding the whole chapter.

We will go topic wise

1) What is Exactly Integer
2) How to Represent Them On Number Line
3) Operation On integers Using Number Line
4)Operation On Integers Without Using Number Line
5) PROPERTIES OF INTEGERS-
CLOSURE PROPERTY OF INTEGERS
COMMUTATIVE PROPERTY OF INTEGERS
ASSOCIATIVE PROPERTY
REPEATED ADDITIONS
ADDITIVE INVERSE
6) MULTIPLICATION PROPERTY FOR INTEGERS
A) CLOSURE PROPERTY OF INTEGERS
B) COMMUTATIVE PROPERTY OF INTEGERS
C) ASSOCIATIVE PROPERTY
D) DISTRIBUTIVE PROPERTY
ROLE OF ZERO
MULTIPLICATIVE IDENTITY

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ncert book of class 7 maths solution,
class 7 math solution hindi medium,
class 7 exercise 1.3 question number 6,
class 7 maths exercise 1.3 question number 6,

EXERCISE 1.3
1. Find each of the following products:
(a) 3 × (–1) (b) (–1) × 225
(c) (–21) × (–30) (d) (–316) × (–1)
(e) (–15) × 0 × (–18) (f) (–12) × (–11) × (10)
(g) 9 × (–3) × (– 6) (h) (–18) × (–5) × (– 4)
(i) (–1) × (–2) × (–3) × 4 (j) (–3) × (–6) × (–2) × (–1)
2. Verify the following:
(a) 18 × [7 + (–3)] = [18 × 7] + [18 × (–3)]
(b) (–21) × [(– 4) + (– 6)] = [(–21) × (– 4)] + [(–21) × (– 6)]
3. (i) For any integer a, what is (–1) × a equal to?
(ii) Determine the integer whose product with (–1) is
(a) –22 (b) 37 (c) 0
4. Starting from (–1) × 5, write various products showing some pattern to show
(–1) × (–1) = 1.
5. Find the product, using suitable properties:
(a) 26 × (– 48) + (– 48) × (–36) (b) 8 × 53 × (–125)
(c) 15 × (–25) × (– 4) × (–10) (d) (– 41) × 102
(e) 625 × (–35) + (– 625) × 65 (f) 7 × (50 – 2)
(g) (–17) × (–29) (h) (–57) × (–19) + 57
6. A certain freezing process requires that room temperature be lowered from 40°C at the rate of 5°C every hour. What will be the room temperature 10 hours after the
process begins?
7. In a class test containing 10 questions, 5 marks are awarded for every correct answer and (–2) marks are awarded for every incorrect answer and 0 for questions not attempted.
(i) Mohan gets four correct and six incorrect answers. What is his score?
(ii) Reshma gets five correct answers and five incorrect answers, what is her score?
(iii) Heena gets two correct and five incorrect answers out of seven questions she
attempts. What is her score?
8. A cement company earns a profit of ` 8 per bag of white cement sold and a loss of
5 per bag of grey cement sold.
(a) The company sells 3,000 bags of white cement and 5,000 bags of grey cement
in a month. What is its profit or loss?
(b) What is the number of white cement bags it must sell to have neither profit
nor loss, if the number of grey bags sold is 6,400 bags.
9. Replace the blank with an integer to make it a true statement.
(a) (–3) × ____ = 27 (b) 5 × ____ = –35
(c) ____ × (– 8) = –56 (d) ____ × (–12) = 132