7th Standard Syllabus & Materials
7th Standard
Tamilnadu 7th Standard Maths T2 - родроХро╡ро▓рпН роЪрпЖропро▓ро╛роХрпНроХроорпН Important Questions And Answers Study Material - QB365 Set B
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - родроХро╡ро▓рпН роЪрпЖропро▓ро╛роХрпНроХроорпН Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - ро╡роЯро┐ро╡ро┐ропро▓рпН Important Questions And Answers Study Material - QB365 Set C
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - ро╡роЯро┐ро╡ро┐ропро▓рпН Important Questions And Answers Study Material - QB365 Set B
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - ро╡роЯро┐ро╡ро┐ропро▓рпН Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - роЗропро▒рпНроХрогро┐родроорпН Important Questions And Answers Study Material - QB365 Set C
Published on: 18/09/2019
Number System
Download Tamil Nadu 7th Standard Maths question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Maths Test1.
Add the following
(i) 8 and –12 using number line
(ii) (–3) and (–5) using number line
(iii) (-100 + (-10)
(iv) 20 + (-72)
(v) 82 + (-75)
(vi) -48 + (-15)
(vii) -225 + (-63)
2.
16 +_ = 16. The property expressed here is_________
3.
An elevator is on the twentieth floor, It goes down 11floors and then up 5 floors, What floor is the elevator on now?
4.
When Malar woke up her temperature was 10rF. Two hours later it was 30 lower, what was her temperature then?
5.
Find the sum of (-9999)(-2001) and (-5999)
6.
During a drought, the water level in a dam fell 3 inches per week for 6 consecutive weeks. What was the change in the water level in the dam at the end of this period?
7.
Kamatchi, a fruit vendor sells 30 apples and 50 pomegranates. If she makes a profit of Rs.8 per apple and loss Rs. 5 per pomegranate, what will be her overall profit(or)loss?
8.
Find the amount that is left in the student’s bank account, if he has made the following transaction in a month. His initial balance is Rs. 690
(i) Deposit(+) of Rs.485
(ii) Withdrawal(-) of Rs.500
(iii) Withdrawal(-) of Rs. 350
(iv) Deposit(+) of Rs. 89
(v) If another Rs. 300 was withdrawn, what would the balance be?
9.
An integer divided by 7 gives a quotient –3. What is that integer?
10.
(-400) divided into 10 equal parts gives _____.
11.
During summer, the level of the water in a pond decreases by 2 inches every week due to evaporation. What is the change in the level of the water over a period of 6 weeks?
12.
What will be the sign of the product of the following.
(i) 16 times of negative integer.
(ii) 29 times of negative integer
13.
A student was asked to subtract (–12) from (–47). He got −30.Is he correct? Justify.
14.
Are (11 + 7) + 10 and 11 + (7 + 10) equal? Mention the property.
15.
In a quiz competition, Team A scored +30,–20, 0 and team B scored –20, 0, +30 in three successive rounds. Which team will win? Can we say that we can add integers in any order?
1.
(i)
∴. 8 + (-12) = -4
(ii)
∴ (-3) + (-5) = -8
(iii) (-100) + (-10) = -100-10 = -110
(iv) 20 + (-72) = 20 - 72 = -52
(v) 82 + (-75) = 82 - 75 = 7
(vi) -48 + (-15) = -48 - 15 =- 63
(vii) -225 + (-63) = 225 - 63 = -288
2.
16 + 0 = 16
is the additive identity on integers
3.
Present location of the elevator = 20th floor
If it goes down 11 floor \(\Rightarrow\) (- 11)
= 20 + (-11) = 9th floor
If it goes up 5 floor = 9 + 5
= 14th floor
4.
Initially Malar's temperature = 102°F
After two hours it lowered 3° \(\Rightarrow\) -3°F
\(\therefore\) Here present temperature = 102° + (-3°) = 99°F
5.
= -17999
6.
Water level fall per week = -3 inches
∴ Water level decrease for 6 weeks = 6 x (-3) = -18 inches
Changes in the water level = 18 inches
7.
Profit for 1 apple = Rs. 8
Profit for 30 apples = 30 x Rs. 8 = Rs. 240
Loss for 1 pomegranate = - Rs. 5
Loss for 50 pomegranates = 50 x -5 = - Rs. 250
Her overall loss will be = - Rs. 250 + Rs. 240
= Rs.- 10
Loss = Rs.10
8.
(i) Rs. 690 + Rs. 485 = Rs. 1175
(ii) Rs. 1175 - Rs. 500 = Rs. 675
(iii) Rs. 675 - Rs. 350 = Rs. 325
(iv) Rs. 325 + Rs. 89 = Rs.414
(v) Rs. 1214 - Rs. 300 = Rs. 914
9.
Let x be an integer
\(\frac{x}{7}=-3\)
X = -3 x 7 = -21
The inleger is -21.
10.
\(\frac{-400}{10}=-40\)
11.
The level of the water in a pond decreases in a week = -2 inches.
Level of water decreases in 6 weeks = 6 x -2 = -12 inches
The change in the level of the water over a period of 6 week is -12 inches
12.
(i) positive integer.
(ii) negative integer.
13.
-47 -(-12) = -47 + 12 = -35
A student got -35.
No, he is not correct
14.
(11 + 7) + 10 = 18 + 10 = 28
11 + (7 + 10) = 11 + 17 = 28
Yes, (11 + 7) + 10 and 11 + (7 + 10) are equal.
This is Associative property. a+ (b + c) = (a + b) + c.
15.
(i) Both Team A and B scored 10 marks. Quiz is draw.
(ii) Yes, we can add integers in any orders since addition is commutative
7th Standard Syllabus & Materials
7th Standard
Tamilnadu 7th Standard Maths T2 - роЗропро▒рпНроХрогро┐родроорпН Important Questions And Answers Study Material - QB365 Set B
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - роЗропро▒рпНроХрогро┐родроорпН Important Questions And Answers Study Material - QB365 Set A
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - роЕро│ро╡рпИроХро│рпН Important Questions And Answers Study Material - QB365 Set C
NEW7th Standard
Tamilnadu 7th Standard Maths T2 - роЕро│ро╡рпИроХро│рпН Important Questions And Answers Study Material - QB365 Set B
Tamilnadu Stateboard 7th Standard Subjects
Tamilnadu Stateboard Standards
