7th Standard Syllabus & Materials
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Published on: 19/08/2019
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.
If A = 2a2- 4b - 1; B = 5a2 + 3b - 8 and C = 2a2 + 9b + 3 then find the value of A - B + C.
2.
In Fig. find the value of x°
3.
Anbu bought 2 notebooks for Rs 24. How much money will be needed to buy 9 such notebooks?
4.
The base of the parallelogram is thrice its height. If the area is 192 sq. cm, find the base and height
5.
Add
(i) (–40) and (30)
(ii) 60 and (–50)
6.
Subtract 94860 from (-86945)
7.
If P = -15 and Q = 5 find (P-Q) + (P+Q)
8.
In 8 hours duration, with uniform decrease in temperature, the temperature dropped 24°. How many degrees did the temperature drop each hour?
9.
What number should be added to (–17) to get (–19)?
10.
Are (11 + 7) + 10 and 11 + (7 + 10) equal? Mention the property.
11.
The sum of all angles at a point is
360°
180°
90°
0°
12.
(-5) - (-18) = ____
23
-13
13
-23
13.
4 typists are employed to complete a work in 12 days. If two more typists are added, they will finish the same work in _______ days.
7
8
9
10
14.
The numerical co-efficient of −7mn is
7
-7
p
-p
15.
The area of a parallelogram whose base 10 m and height 7 m is
70 sq. m
35 sq. m
7 sq. m
10 sq. m
16.
____÷ (−4) = 9
17.
Draw a tetromino which passes symmetry __________
18.
(100) \(\times \) ______= -500
19.
16 taps can fill a petrol tank in 18 minutes. The time taken for 9 taps to fill the same tank will be _______ minutes.
20.
A car travels 60 km with 3 liters of petrol. If the car has to cover the distance of 200 km, it requires _______ liters of petrol.
21.
In the expression 25m + 14n, the type of the terms are ________ terms.
22.
Sum a weaves 25 baskets in 35 days. In how many days will she weave 110 baskets?
23.
A shopkeeper earns a profit of Rs. 5 by selling one notebook and incurs a loss of Rs. 2 per pen while selling of his old stock. In a particular day he earns neither profit nor loss. If he sold 20 notebooks, how many pens did he sell?
24.
(i) Name the angle that corresponds to \(\angle\)1.
(ii) Name the angle that is alternate interior to \(\angle\)3.
(iii) Name the angle that is alternate exterior to \(\angle\)8.
(iv) Name the angle that corresponds to \(\angle\)8.
(v) Name the angle that is alternate exterior to \(\angle\)7.
(vi) Name the angle that is alternate interior to \(\angle\)6.
25.
1 x (-1098) = (–1098) = (–1098) x 1
26.
0 + (−138) = (−138) = (−138)+0
27.
For any two integers 72 and 108, 72 +108 is an also an integer
28.
.JPG)
29.
.JPG)
30.
(−90) + ( −30) = 60
31.
The quotient of two integers having opposite sign is a negative integer.
32.
The product of two negative integers is a positive integer
33.
The sum of a positive integer and a negative integer is always a positive integer.
1.
Given:
A = 2a2 - 4b-1; B = 5a2 + 3b - 8 and C = 2a2 + 9b + 3
A + B + C = (2a2 - 4b - 1) - (5a2 + 3b- 8)+(2a2 - 9b + 3)
= 2a2 - 4b - 1 + (5a2 - 3b + 8) + 2a - 9b + 3
= 2a2- 4b - 15a 2- 3b + 8 + 2a2 - 9b + 3
= 2a2 - 5a2 + 2a2 - 4b - 3b - 9b -1 + 8 + 3
= (2 - 5 + 2)a2 - 4b - 3b - 9b - 1 + 8 + 3
= -a2 - 16b + 10
2.
98° + 23° + 76° + x° = 360°
197° + x° = 360°
x° = 360° - 197° = 163°
3.
Using unitary method we can solve this as follows:
The cost of 2 notebooks = Rs. 24
The cost of 1 notebook = \(\frac { 24 }{ 2 } \) = Rs.12
Therefore, the cost of 9 notebooks = 9 x Rs.12
= Rs.108
Hence, Anbu has to pay Rs.108 for 9 notebooks.
4.
Let the height of the parallelogram = h cm
Then the base of the parallelogram = 3h cm
Area of the parallelogram = 192 sq. cm
b x h = 192
3h x h = 192
3h² = 192
h² = 64
h x h = 8 x 8
h = 8 cm
base = 3h = 3 x 8 = 24 cm
Therefore, base of the parallelogram is 24 cm and height is 8 cm.
5.
(i) (–40) and (30)
–40 + 30 = –10
(ii) 60 and (–50)
60 + (–50) = 60 – 50 = 10
6.
7.
\(\frac{\mathrm{P}-\mathrm{Q}}{\mathrm{P}+\mathrm{Q}}=\frac{-15-5}{-15+5}=\frac{-20}{-10}=2\)
8.
Duration = 8 hours
Temperature dropped = -24o
Temperature dropped each hour = \((-24) \div 8=-3^{\circ}\)
3o dropped each hour
9.
Let x be the number.
-17 + x = -19
x = -19 + 17
x = -2
-2 should be added to -17 to get -19.
10.
(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.
11.
(a)
360°
12.
(c)
13
13.
(b)
8
14.
(b)
-7
15.
(a)
70 sq. m
16.
( )
-36
17.
( )
18.
( )
-5
19.
( )
32
20.
( )
10 litres
21.
( )
unlike
22.
To weave 25 baskets time taken = 35days
\(\therefore\) To weave 1 basket time taken = \(\cfrac { 35 }{ 25 } days\)
23.
Since neither profit nor loss
Profit + Loss = 0
(ie) profit = -Loss
Profit earned from 1 notebook = Rs. 5
Profit earned from 20 notebooks = 20 x Rs. 5
= Rs. 100
Loss incurred by selling pens = Rs. 100 Loss
= −100
Loss for 1 pen = Rs. 2
loss = −2
Total number of pens sold = (−100) ÷ (−2)
= 50 pens.
24.
(i) The angle that corresponds to \(\angle\)1 is \(\angle\)5
(ii) The angle that is alternate interior to \(\angle\)3 is \(\angle\)5
(iii) The angle that is alternate exterior to \(\angle\)8 is \(\angle\)2
(iv) The angle that corresponds to \(\angle\)8 is \(\angle\)4
(v) The angle that is alternate exterior to \(\angle\)7 is \(\angle\)1
(vi) The angle that is alternate interior to \(\angle\)6 is \(\angle\)4
25.
Multiplicative identity
26.
Additive identity
27.
Closed under addition
28.
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29.
.JPG)
30.
(b)
31.
(a)
32.
(a)
33.
(b)
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