Tuesday, May 6, 2025

Grade 7 DataHandling Chapter Test 2025-26

Grade 7 DataHandling Chapter Test 2025-2026

Max marks: 40 Duration 1hr 30 min

Answer the following

One mark questions (1 x 15 = 15 marks)

1. Choose the correct option. 

(i) The probability of getting a number less than or equal to 6 when a die is rolled is: 

(a) 0 (b) 6 (c) 16 (d) 1 

(ii) If a day is selected at random, what is the probability it is not Monday? 

(a) 17 (b) 27 (c) 67 (d) 76

(iii). Which of the following is a random experiment? 

(a) Tossing a coin (b) Rolling a single 6-sided die

(c) Choosing a marble from a jar (d) All of the above 

(iv) Which of the following is an outcome? 

(a) Rolling a pair of dice (b) Coin landing on heads

(c) Choosing 2 marbles from a jar (d) None of the above 

(v) Which of the following experiments does not have equally likely outcomes? 

(a) Choosing a number at random from 1 to 7 (b) Tossing a coin 

(c) Choosing a letter at random from the word SCHOOL (d) None of the above 

(vi)  The arithmetic mean of the first four natural numbers is: 

(a) 2 (b) 2.5 (c) 3 (d) 3.5 

(vi) The median of the first ten natural numbers is: 

(a) 5 (b) 5.5 (c) 6 (d) 6.5 

(viii) What is the mode of the given data? (10, 8, 11, 11, 7, 8, 10, 11, 7, 7, 11} 

(a) 4 (b) 10 (c) 11 (d) 7 

(ix)  The probability of any event cannot exceed: 

(a) 12 (b) 1 (c) 10 (d) 100 

(x) The probability of getting an even number when a die is rolled is

(a) 12 (b) 14  (c) 34 (d) 1 

(xi) A month is selected at random. What is the probability that it has 31 days?

(xii) Find the mean of the given data. 40, 90, 40, 20, 100 

(xiii) Find the median of the given data. 900, 1300, 1200, 1000, 1100 

(xiv)  Find the mode of the given data.  46, 106, 4, 46, 134, 86, 86.5 

(xv)  If a date is randomly selected from April, what is the probability that it is divisible by 7? 

Two marks questions (5 x 2 =10 marks)

1. Find the mean, median and mode of the following set of data: 16, 40, 44, 16, 40, 40, 80, 17, 64, 60, 100 

2.Suppose that the letter cards for the word MATHEMATICS were put face down and mixed up and a card is picked up at random. What is the probability of picking up a vowel? 

3.Find the most popular pizza topping from the list of orders: cheese, cheese, black olives, mushrooms, onions, cheese, mushrooms, black olives, onions, cheese, mushrooms, cheese. 

4. A number tile is randomly selected. 

(i) How many possible outcomes are there? 

(ii) What are the favourable outcomes of choosing a prime? 

(iii) In how many ways can choosing a composite number occur? 

5. Find the probability of getting a sum of 8 when 2 dice are rolled. 


Three mark questions  (5 x 3 = 15 marks)

1.10. A die is rolled once. Find the probability of getting a number: 

(i) less than 4 

(ii) less than or equal to 4 

(iii) greater than 4 

(iv) greater than or equal to 4 

2. A bag contains 4 blue, 4 red, 6 yellow and 10 white marbles. What is the probability of drawing the following? Which of these is a certain event? 

(i) a blue marble (iii) a red marble 

(ii) a yellow marble (iv) a white marble 

(v) a blue or a yellow marble (vii) A red, yellow or white marble 

(vi) a red or a white marble (viii) A red, blue, yellow or white marble.

3.


4.



5.



DOWNLOAD THE QUESTION PAPER CLICK HERE

SOLUTIONS

Grade 7 DataHandling Chapter Test 2025-26


One-mark questions:

(i) The probability of getting a number ≤ 6 on a die (all outcomes 1 to 6):
Answer: (d) 1

(ii) Probability of not Monday = 6/7 (since there are 7 days)
Answer: (d) 6/7 (likely meant “6⁄7” — option marked as 76 is a typo)

(iii) A random experiment has uncertain outcomes.
Answer: (d) All of the above

(iv) An outcome is a single possible result.
Answer: (b) Coin landing on heads

(v) “SCHOOL” has letters with unequal frequency.
Answer: (c) Choosing a letter at random from the word SCHOOL

(vi) First four natural numbers: 1, 2, 3, 4 → Mean = (1+2+3+4)/4 = 2.5
Answer: (b) 2.5

(vii) First ten natural numbers: 1 to 10 → Median = (5 + 6)/2 = 5.5
Answer: (b) 5.5

(viii) Data: 10, 8, 11, 11, 7, 8, 10, 11, 7, 7, 11 → Mode = 11 (occurs 4 times)
Answer: (c) 11

(ix) Probability cannot exceed 1
Answer: (b) 1

(x) Even numbers on a die: 2, 4, 6 → 3 outcomes out of 6 = 3/6 = 1/2
Answer: (a) 1/2

(xi) Months with 31 days: Jan, Mar, May, Jul, Aug, Oct, Dec = 7/12
Answer: 7/12

(xii) Mean of 40, 90, 40, 20, 100 = (40+90+40+20+100)/5 = 58
Answer: 58

(xiii) Data: 900, 1300, 1200, 1000, 1100 → Sorted: 900, 1000, 1100, 1200, 1300 → Median = 1100
Answer: 1100

(xiv) Mode: 46, 106, 4, 46, 134, 86, 86.5 → 46 appears twice
Answer: 46

(xv) Dates in April = 30. Numbers divisible by 7: 7, 14, 21, 28 → 4 outcomes → 4/30 = 2/15
Answer: 2/15


Two-mark questions:

1. Data: 16, 40, 44, 16, 40, 40, 80, 17, 64, 60, 100

  • Mean = sum/11 = (577)/11 = 52.45

  • Median (sorted): 16,16,17,40,40,40,44,60,64,80,100 → middle = 40

  • Mode = 40 (appears 3 times)

2. MATHEMATICS → Letters: M, A, T, H, E, M, A, T, I, C, S → vowels: A, E, A, I → 4/11
Answer: 4/11

**3. Pizza toppings: cheese (5), black olives (2), mushrooms (3), onions (2)
Answer: Cheese

4. Assume tiles = numbers 1–10:
(i) 10 possible outcomes
(ii) Primes = 2, 3, 5, 7 → 4 favourable outcomes
(iii) Composites = 4, 6, 8, 9, 10 → 5 outcomes

5. Getting a sum of 8 with two dice:
(2,6), (3,5), (4,4), (5,3), (6,2) → 5 favourable outcomes
Total = 36 → Probability = 5/36


Three-mark questions:

1. Die rolled once (numbers 1–6):
(i) < 4 → {1,2,3} → 3/6 = 1/2
(ii) ≤ 4 → {1,2,3,4} → 4/6 = 2/3
(iii) > 4 → {5,6} → 2/6 = 1/3
(iv) ≥ 4 → {4,5,6} → 3/6 = 1/2

2. Marbles: 4 blue, 4 red, 6 yellow, 10 white = 24 total

  • (i) Blue: 4/24 = 1/6

  • (ii) Yellow: 6/24 = 1/4

  • (iii) Red: 4/24 = 1/6

  • (iv) White: 10/24 = 5/12

  • (v) Blue or Yellow = (4+6)/24 = 10/24 = 5/12

  • (vi) Red or White = (4+10)/24 = 14/24 = 7/12

  • (vii) Red, Yellow or White = (4+6+10)/24 = 20/24 = 5/6

  • (viii) All colors = 24/24 = 1 → This is the certain event



Grade 7 Symmetry Chapter Test 2025-2026


 Grade 7 Symmetry Chapter Test 2025-2026

Max marks: 30 Duration 1hr 

Answer the following

One mark questions (1 x 15 = 15 marks)

1. Tick the correct option. 

(i) Which of the following letters does not have reflection symmetry? 

(a) A (b) Y (c) H (d) P 

(ii) An equilateral triangle has rotational symmetry of order: 

(a) 1 (b) 2 (c) 3 (d) 4 

(iii) How many axes of reflection symmetry does a square have? 

(a) 1 (b) 2 (c) 3 (d) 4 

(iv) How many axes of symmetry does a circle have? 

(a) 1 (b) 0 (c) 360 (d) infinite 

(v) Which of these cannot be the angle of rotational symmetry? 

(a) 180° (b) 90° (c) 240° (d) 120° 

(vi) How many axes of symmetry does a scalene triangle have? 

(a) 1 (b) 0 (c) 2 (d) 3 

(vii) The number of axes of reflection symmetry and the order of rotational symmetry of the letter X are resp,: 

(a) 2 and 4 (b) 1 and 2 (c) 4 and 2 (d) 1 and 4 

2. Write against each statement whether it is true or false. 

(i) Only round shapes can have rotational symmetry. 

(ii) Every shape has a rotational symmetry of order 1 at least. 

(iii) A shape with one line of symmetry cannot have a rotational symmetry of order greater than 1. 

(iv) A shape with a larger degree of rotational symmetry has a greater order of symmetry. 

(v) A semicircle has rotational symmetry of order 2. 

3. Answer the following

(i) Name a shape that has the same number of lines of symmetry as a rectangle. 

(ii)  Draw a shape that has the same number of lines of symmetry as a square. 

(iii) Does a spiral have rotational symmetry of order greater than 1? 

(iv) How many lines of symmetry does each of the two set squares in the geometry instruments box have? 

(v). How many lines of symmetry does the Indian national flag have? 

(vi) .Draw any shape that has reflection symmetry but no rotational symmetry greater than 1.

(vii) Among the letters E, X, F, G, H, T, R and U, identify the letters having rotational symmetry and find their order of rotational symmetry. 

(viii) Name an irregular polygon (all sides do not have the same length) (a) having reflection symmetry and (b) not having reflection symmetry.


Two marks questions (2 x 2 =04 marks)

1  Draw stars having five, six and seven arms. Find out whether each has rotational symmetry and if so, of what order. 

2.







Three mark questions  (2 x 3 = 06 marks)



1.



2. Fill in the numbers





DOWNLOAD THE QUESTION PAPER CLICK HERE


SOLUTIONS



Q1.

(i) Which of the following letters does not have reflection symmetry?

  • (d) P ✅

Explanation: 'A', 'Y', and 'H' have at least one line of symmetry. 'P' has none.


(ii) An equilateral triangle has rotational symmetry of order:

  • (c) 3 ✅

Explanation: It looks the same after rotating 120°, 240°, and 360°.


(iii) How many axes of reflection symmetry does a square have?

  • (d) 4 ✅

Explanation: A square has 2 diagonals and 2 midlines as symmetry axes.


(iv) How many axes of symmetry does a circle have?

  • (d) infinite ✅

Explanation: A circle can be folded about any diameter, giving infinite lines of symmetry.


(v) Which of these cannot be the angle of rotational symmetry?

  • (c) 240° ✅

Explanation: 240° is not a factor of 360° that evenly divides the circle into identical sections. (Corrected: Actually, 240° can be a rotational symmetry angle—see clarification below.)

⚠️ Correction: All listed angles can be rotational symmetry angles, depending on the shape. A regular hexagon, for instance, has 60°, 120°, 180°, 240°, 300°, and 360° rotational symmetry.
Therefore, a better correct answer does not exist from the given options unless the question specifies regular polygons only. In standard multiple-choice format, the best choice might be none of these or question should be revised.


(vi) How many axes of symmetry does a scalene triangle have?

  • (b) 0 ✅

Explanation: A scalene triangle has all unequal sides and angles—no symmetry.


(vii) The number of axes of reflection symmetry and the order of rotational symmetry of the letter X are respectively:

  • (a) 2 and 4 ✅

Explanation: 'X' has 2 axes of symmetry (vertical and diagonal) and rotational symmetry of order 4 (every 90°).



2. Write True or False for each statement:

(i) Only round shapes can have rotational symmetry.
False

Explanation: Many non-round shapes (like equilateral triangles, squares, etc.) have rotational symmetry.

(ii) Every shape has a rotational symmetry of order 1 at least.
True

Explanation: Every shape can be rotated by 360° to look the same — this is order 1 rotational symmetry.

(iii) A shape with one line of symmetry cannot have a rotational symmetry of order greater than 1.
True

Explanation: Shapes like an isosceles triangle have one line of symmetry and no rotational symmetry beyond order 1.

(iv) A shape with a larger degree of rotational symmetry has a greater order of symmetry.
True

Explanation: The order of rotational symmetry increases as the shape repeats more times during a 360° rotation.

(v) A semicircle has rotational symmetry of order 2.
False

Explanation: A semicircle has no rotational symmetry beyond order 1; it looks different when rotated before 360°.


3. Answer the following:

(i) Name a shape that has the same number of lines of symmetry as a rectangle.
Answer: Rhombus

Explanation: A rectangle has 2 lines of symmetry (horizontal and vertical), same as a rhombus (diagonals).

(ii) Draw a shape that has the same number of lines of symmetry as a square.
Answer: You can draw a regular cross (+) or a regular octagon. Both can have 4 lines of symmetry like a square.


(iii) Does a spiral have rotational symmetry of order greater than 1?
Answer: No

Explanation: A spiral has rotational pattern but not exact symmetry — it doesn’t look identical after a certain degree of rotation.

(iv) How many lines of symmetry does each of the two set squares in the geometry box have?
Answer:

  • 45°–45°–90° set square: 1 line

  • 30°–60°–90° set square: 0 lines

Explanation: The first has reflection symmetry along the perpendicular bisector of the right angle; the second does not.

(v) How many lines of symmetry does the Indian national flag have?
Answer: 1 line (vertical, through the center of the Ashoka Chakra)

Explanation: The three horizontal bands are symmetric top to bottom only if the Ashoka Chakra is centered.

(vi) Draw any shape that has reflection symmetry but no rotational symmetry greater than 1.
Answer: An isosceles triangle fits this.


(vii) Among the letters E, X, F, G, H, T, R, U, identify the letters having rotational symmetry and find their order of rotational symmetry:

  • XOrder 2

  • HOrder 2

  • UOrder 2

Other letters (E, F, G, T, R) do not have rotational symmetry beyond order 1.

(viii) Name an irregular polygon (all sides do not have the same length):

  • (a) Having reflection symmetry → Isosceles trapezium

  • (b) Not having reflection symmetry → Scalene triangle


Two marks questions (2 x 2 =04 marks)

1  Draw stars having five, six and seven arms. Find out whether each has rotational symmetry and if so, of what order. 

⭐ Five-arm star:

  • A regular 5-point star (like the one on many flags).

  • Rotational Symmetry: Yes

  • Order: 5

You can rotate it 72°, 144°, 216°, 288°, and 360°, and it looks the same each time.

⭐ Six-arm star:

  • Can be drawn by overlapping two equilateral triangles (like the Star of David).

  • Rotational Symmetry: Yes

  • Order: 6

It looks the same every 60° rotation.

⭐ Seven-arm star:

  • A regular star with 7 equally spaced points (harder to draw perfectly by hand).

  • Rotational Symmetry: Yes

  • Order: 7

It repeats every 360° ÷ 7 ≈ 51.43°


2. Draw the line(s) of symmetry and write the order of rotational symmetry:

(i) House Shape (Pentagon with triangle on top):

  • Lines of symmetry: 1 (vertical line down the center)

  • Order of rotational symmetry: 1

It looks the same only after a full 360° rotation.

(ii) 5-pointed star:

  • Lines of symmetry: 5 (each passing through a point and opposite indentation)

  • Order of rotational symmetry: 5

Rotational symmetry every 72° (360° ÷ 5).

(iii) Regular Pentagon with 5 circles on vertices:

  • Lines of symmetry: 5

  • Order of rotational symmetry: 5


Three-mark questions: 

Find the order of rotational symmetry of the following figures:

(i) Letter Z shape with embellishment:

  • Order of rotational symmetry: 2

It looks the same after 180°.

(ii) Star-shaped polygon (likely regular):

  • Order of rotational symmetry: 4

It repeats every 90°.

(iii) Plus-shaped design with 4 arms:

  • Order of rotational symmetry: 4

Same after 90°, 180°, 270°, and 360°.

(iv) Overlapping equilateral triangles (Star of David):

  • Order of rotational symmetry: 6

Rotational symmetry every 60°


Letter Number of Lines of Symmetry Order of Rotational Symmetry
B 1 (vertical) 1
E 1 (vertical) 1
H 2 (vertical and horizontal) 2
M 1 (vertical) 1
N 0 1
O Infinite Infinite (or undefined / all angles)
Z 0 2

Notes:

  • B, E, M: Only have vertical symmetry.

  • H: Symmetrical both vertically and horizontally, and looks the same after a 180° rotation.

  • N and Z: Have no lines of symmetry, but Z has rotational symmetry of order 2 (180°).

  • O: A perfect circle has infinite symmetry lines and infinite rotational symmetry.




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