1907 + Interview Questions in Maths in Class 7

1.	Multiply : 3.45 xx17
Answer» ANSWER :58.65

Discussion

2.	Two trains travelling in oppositedirection at 60kmph and 50 kmph crossed each other in 9 s. If the train which is travelling at 60 kmph crossed a pole in 6s, then find the length of the train which is travelling at 50 kmph.
Answer» 130 m 160 m 175 m 200 m Solution :Let the length of the train, which is traveling at 60 kmph or `(50)/(3) " m/s, is " l_(1)` m and the length of the train travellin at 50 kmph or `(125)/(9) "m/s is "l_(2)` m. `"Given," (l_(1))/(50/3) = 6` `rArr l_(1) = (50)/(3) xx 6 = 100m` It is also given that, `(l_(1) + l_(2))/(50/(3) + (125)/(9)) = 9` `rArr l_(1) + l_(2)= 9((150 + 125)/(9))` `rArr 100 + l_(2) = 275` `rArr l_(2) = 175M` HENCE, the correct option is (c).

Discussion

3.	Fill in the blank 4 sq. m = "_____________" sq. cm
Answer» ANSWER :`40,000`

Discussion

4.	Calculate the value of x in each of the following figures :
Answer» ANSWER :`x=30`, `x=120`

Discussion

5.	The permieter of a polygon is 24.5 cm. Each side of the polygon is 3.5 cm1 in length. Find the number of sides of the polygon.
Answer» ANSWER :7

Discussion

6.	Write the following fractions as divisions. a. (3)/(13)= ________
Answer» ANSWER :`3 DIV 13`

Discussion

7.	Evaluate: 14.23 xx 6
Answer» ANSWER :`85.38`

Discussion

8.	Convert each of the following fractions into a decimal : 3/5
Answer» ANSWER :0.6

Discussion

9.	Find the product 34/9xx15
Answer» ANSWER :`53 (1)/(3)`

Discussion

10.	Convert each of the following fractions into a decimal : 9/100
Answer» ANSWER :0.09

Discussion

11.	Solve and verify the solution obtained in each of thefollowing equations. 5x + 7 = 32
Answer» ANSWER :5

Discussion

12.	Find the ara of a right-angled triangle with hypotenuse 25 cm and altitude24 cm.
Answer» ANSWER :84 SQ. CM

Discussion

13.	Starting from (-7) times 4, find (-7) times (-3).
Answer» ANSWER :21

Discussion

14.	If the manufacturer gains 6% the wholesale dealer 8% and the retailer10% then what is the producation cost of the geyser br ₹x.
Answer» ANSWER :`12500`

Discussion

15.	Find the area and height of an equilateral triangle of side 8 cm (Take sqrt(3)=1.73).
Answer» ANSWER :`=6.92` CM.

Discussion

16.	Ravi runs at the speed of 5.6 km per hour and Siya runs at 4.9km per hour. How much distance will each of them cover after 0.5 hours ?
Answer» ANSWER :`2.8 KM; 2.45 km`

Discussion

17.	Evaluate the 1.274 div 0.13
Answer» ANSWER :`9.8`

Discussion

18.	From what should ((3)/(7) + (4)/(21)) be subtracted to get (5)/(6) ?
Answer» ANSWER :`(61)/(42)`

Discussion

19.	Which letters of the English alphabet have : a single horizontal line of symmetry
Answer» ANSWER :B, C, D, E, K

Discussion

20.	Evaluate: 6 xx 3 (3)/(4)
Answer» `22 (1)/(2)` `22 (5)/(2)` `21 (1)/(2)` `23 (1)/(2)` ANSWER :A

Discussion

21.	Fill in the blanks and state the property used. (65+15)+56="______"+(15+56)
Answer» `65` PROPERTY USED : Associative property `65` Property used : commutative property `65` Property used : distributive property `69` Property used : associative property Answer :A

Discussion

22.	Arrange the following rational number in ascending order: (i) frac(2)(5),frac(7)(10),frac(8)(15),frac(13)(30) (ii) frac(-3)(4),frac(5)(-12),frac(-7)(16),frac(9)(-24) (iii) frac(-3)(10),frac(7)(-15),frac(-11)(20),frac(17)(-30) (iv) frac(2)(3),frac(3)(4),frac(5)(-6),frac(-7)(12)
Answer» Answer :(i) `frac(2)(5)ltfrac(13)(30)ltfrac(8)(15)ltfrac(7)(10)` (II) `frac(-3)(4)ltfrac(-7)(16)ltfrac(5)(-12)ltfrac(9)(-24)` (iii) `frac(17)(-30)ltfrac(-11)(20)ltfrac(7)(-15)ltfrac(-3)(10)` (IV) `frac(5)(-6)ltfrac(-7)(12)ltfrac(2)(3)ltfrac(3)(4)`

Discussion

23.	Divide : 0.7 div1000
Answer» ANSWER :0.0007

Discussion

24.	A pile of notebooks is 14 1/4 cm thick. If each notebook is 1 3/16 cm thick, then find the 4 16number of notebooks in the pile
Answer» ANSWER :`=12`

Discussion

25.	State true or false in each of the following statements. The identity element for division for integers is 1.
Answer» ANSWER :FALSE

Discussion

26.	Find the perimeter and area of a rectangle having :Length = 9.6 cm , Breadth =1.5 cm
Answer» ANSWER :`22.2cm,14.4cm^(2)`

Discussion

27.	The product of two numbers is 90.042.If one of the numbers is 25.8, find the other number.
Answer» `3.49` `3.99` `7.49` `2.49` ANSWER :A

Discussion

28.	Solve the following equations and verify the results. 5(2p+3)-3(2p-3)=4
Answer» <P> ANSWER :`p =- 5`

Discussion

29.	Ajay's home is 150 m away from a bus stop. At what speed should he travel to reach his house from the bus stop in 2 min?
Answer» ANSWER :1.25 m/s

Discussion

30.	Fill in the blanks. 275 g = "________" kg
Answer» ANSWER :`0.275`

Discussion

31.	Town A is 200 km for from town B. A person can travel in a car from town A to town B in 4 h. If he travels at a constant speed, then what is the speed of the car (in kmph)?
Answer» ANSWER :50 KMPH

Discussion

32.	Rubal had Rs 525 with her. She bought two pens for Rs 35.75 each and a book for Rs 416.60. How much money is left with her?
Answer» ANSWER :`RS 36.90`

Discussion

33.	Find the product. 0.017 xx 100
Answer» ANSWER :`1.7`

Discussion

34.	Following is a data sample of 8 observations in ascending order. If the mean of this data is 31 and the mode is 35. Find the missing observations. 2024x303135y45
Answer» ANSWER :28,35

Discussion

35.	The ratio of the number of boys to that of girls in a school is 3:4. Two-third of the number of boys are cricket players and the rest are football players. One-fourth of the number of girls are badminton players and the rest are handball players. Which game has the greatest number of participants if the total strength of the school is 1400?
Answer» ANSWER :HANDBALL TEAM

Discussion

36.	Evaluate: b. 11 xx (9)/(11)
Answer» ANSWER :`9`

Discussion

37.	Evaluate the 2.30 div 1.4
Answer» ANSWER :`1.45`

Discussion

38.	Express 4^(4) in exponent form with base 2.
Answer» ANSWER :`2^(8)`

Discussion

39.	Solve the equationsand check your answer in the each case: (x-2)/(3)+(x-3)/(4)=(x-1)/(2)
Answer» ANSWER :X = 11

Discussion

40.	Convert each of the following decimals into a fraction :2.8
Answer» ANSWER :`2(4)/5`

Discussion

41.	Write the following statements in the form of equations. A number reduced by 4 is 14.
Answer» ANSWER :a - 4 = 14

Discussion

42.	Which ratio is greater,13 : 24 or 17 : 32 ?
Answer» Answer :Clearly , `(52)/(96) GT (51)/(96)`

Discussion

43.	Evaluate: (-7) times 8 times (-5) times (-6)
Answer» ANSWER :-1680

Discussion

44.	Find the median of first 15 odd numbers. 4. Find the median of first 10 even numbers. 5. Find the median of first 50 whole numbersHint. First 50 whole numbers are 0, 1, 2, 3,____, 49
Answer» ANSWER :24.5

Discussion

45.	Which ratio is greater ? (3 : 4) or (5 : 7)
Answer» ANSWER :`3 : 4 `

Discussion

46.	Evaluate: (1) times (1) times (1) times (1) times (-1) times (-1) times (-1) times (-1) times (-1) times (-1) times (-1)
Answer» ANSWER :-1

Discussion

47.	Evaluate: 256.76 div 14
Answer» ANSWER :`18.34`

Discussion

48.	Find the area of a circle with radius 3.5 cm.
Answer» ANSWER :`38.5 SQ. m`

Discussion

49.	A sum of money amounts to Rs. 2000 in 3 years and Rs. 2500 in 5 years at simple interst. Find the rate of interest per annum.
Answer» `33(1)/(3)%` `12(1)/(3)%` `25%` 0.2 Solution :S.I. for 2 years = RS. 500.

Discussion

50.	Convert the as direct. 0.005 sq. m into sq. cm
Answer» ANSWER :`0.05 KM ^(2)`

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Multiply : 3.45 xx17

Two trains travelling in oppositedirection at 60kmph and 50 kmph crossed each other in 9 s. If the train which is travelling at 60 kmph crossed a pole in 6s, then find the length of the train which is travelling at 50 kmph.

Fill in the blank 4 sq. m = "_____________" sq. cm

Calculate the value of x in each of the following figures :

The permieter of a polygon is 24.5 cm. Each side of the polygon is 3.5 cm1 in length. Find the number of sides of the polygon.

Write the following fractions as divisions. a. (3)/(13)= ________

Evaluate: 14.23 xx 6

Convert each of the following fractions into a decimal : 3/5

Find the product 34/9xx15

Convert each of the following fractions into a decimal : 9/100

Solve and verify the solution obtained in each of thefollowing equations. 5x + 7 = 32

Find the ara of a right-angled triangle with hypotenuse 25 cm and altitude24 cm.

Starting from (-7) times 4, find (-7) times (-3).

If the manufacturer gains 6% the wholesale dealer 8% and the retailer10% then what is the producation cost of the geyser br ₹x.

Find the area and height of an equilateral triangle of side 8 cm (Take sqrt(3)=1.73).

Ravi runs at the speed of 5.6 km per hour and Siya runs at 4.9km per hour. How much distance will each of them cover after 0.5 hours ?

Evaluate the 1.274 div 0.13

From what should ((3)/(7) + (4)/(21)) be subtracted to get (5)/(6) ?

Which letters of the English alphabet have : a single horizontal line of symmetry

Evaluate: 6 xx 3 (3)/(4)

Fill in the blanks and state the property used. (65+15)+56="______"+(15+56)

Arrange the following rational number in ascending order: (i) frac(2)(5),frac(7)(10),frac(8)(15),frac(13)(30) (ii) frac(-3)(4),frac(5)(-12),frac(-7)(16),frac(9)(-24) (iii) frac(-3)(10),frac(7)(-15),frac(-11)(20),frac(17)(-30) (iv) frac(2)(3),frac(3)(4),frac(5)(-6),frac(-7)(12)

Divide : 0.7 div1000

A pile of notebooks is 14 1/4 cm thick. If each notebook is 1 3/16 cm thick, then find the 4 16number of notebooks in the pile

State true or false in each of the following statements. The identity element for division for integers is 1.

Find the perimeter and area of a rectangle having :Length = 9.6 cm , Breadth =1.5 cm

The product of two numbers is 90.042.If one of the numbers is 25.8, find the other number.

Solve the following equations and verify the results. 5(2p+3)-3(2p-3)=4

Ajay's home is 150 m away from a bus stop. At what speed should he travel to reach his house from the bus stop in 2 min?

Fill in the blanks. 275 g = "________" kg

Town A is 200 km for from town B. A person can travel in a car from town A to town B in 4 h. If he travels at a constant speed, then what is the speed of the car (in kmph)?

Rubal had Rs 525 with her. She bought two pens for Rs 35.75 each and a book for Rs 416.60. How much money is left with her?

Find the product. 0.017 xx 100

Following is a data sample of 8 observations in ascending order. If the mean of this data is 31 and the mode is 35. Find the missing observations. 2024x303135y45

Evaluate: b. 11 xx (9)/(11)

Evaluate the 2.30 div 1.4

Express 4^(4) in exponent form with base 2.

Solve the equationsand check your answer in the each case: (x-2)/(3)+(x-3)/(4)=(x-1)/(2)

Convert each of the following decimals into a fraction :2.8

Write the following statements in the form of equations. A number reduced by 4 is 14.

Which ratio is greater,13 : 24 or 17 : 32 ?

Evaluate: (-7) times 8 times (-5) times (-6)

Find the median of first 15 odd numbers. 4. Find the median of first 10 even numbers. 5. Find the median of first 50 whole numbersHint. First 50 whole numbers are 0, 1, 2, 3,____, 49

Which ratio is greater ? (3 : 4) or (5 : 7)

Evaluate: (1) times (1) times (1) times (1) times (-1) times (-1) times (-1) times (-1) times (-1) times (-1) times (-1)

Evaluate: 256.76 div 14

Find the area of a circle with radius 3.5 cm.

A sum of money amounts to Rs. 2000 in 3 years and Rs. 2500 in 5 years at simple interst. Find the rate of interest per annum.

Convert the as direct. 0.005 sq. m into sq. cm