Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 477 · 40 questions

Thinking tip (Enough facts, then decide): Not enough evidence: “One mango was sour, so all are sour.” Enough: “We checked all 40 mangoes; every one was ripe.” Before you answer, check every fact you need is given. 7 rows with 9 in each → 7 × 9 = 63. “A box has 9 in each row” with no number of rows → not enough info. Missing facts hide in words like “and a bag”, “older” (by how much?) and “a long film” (how long?).

1. 1.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Arjun bought 6 balls and a lunch box for ₹240 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹40 (c) ₹240 (d) ₹234
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking one friend (d) asking your pet
4. 4.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) dogs hate you (d) all dogs are mean
5. 5.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Diya is 10 years old. Saanvi is older than Diya. How old is Saanvi? (a) 15 (b) not enough info (c) 12 (d) 11
7. 7.🧩 Arjun bought 2 kites for ₹40 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) ₹20 (c) not enough info (d) ₹25
8. 8.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
9. 9.🧩 Ishaan is 9 years old. Vihaan is older than Ishaan. How old is Vihaan? (a) 10 (b) 14 (c) not enough info (d) 11
10. 10.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
11. 11.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 9 PM (c) 6 PM (d) not enough info
12. 12.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
13. 13.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
14. 14.🧩 Ishaan is 11 years old. Ananya is 5 years older than Ishaan. How old is Ananya? (a) 17 (b) 16 (c) not enough info (d) 5
15. 15.🧩 Diya is 9 years old. Vihaan is 3 years older than Diya. How old is Vihaan? (a) 13 (b) not enough info (c) 3 (d) 12
16. 16.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
17. 17.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
18. 18.🧩 Rohan bought 2 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹100 (c) not enough info (d) ₹55
19. 19.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, mangoes match (c) no, check more (d) yes, it is certain
20. 20.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
21. 21.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
22. 22.🧩 Rohan bought 2 kites for ₹110 in all. Each kite cost the same. What did one kite cost? (a) ₹110 (b) ₹60 (c) not enough info (d) ₹55
23. 23.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 4 PM
24. 24.🧩 Diya is 8 years old. Ananya is older than Diya. How old is Ananya? (a) 9 (b) not enough info (c) 13 (d) 10
25. 25.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 8 PM
26. 26.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
27. 27.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 8 PM
28. 28.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 6 PM
29. 29.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 7 PM
30. 30.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 5 PM (c) 2 PM (d) 6 PM
31. 31.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 4 PM (d) 8 PM
32. 32.🧩 Diya is 6 years old. Saanvi is 6 years older than Diya. How old is Saanvi? (a) not enough info (b) 12 (c) 6 (d) 13
33. 33.🧩 A box has 8 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 48 (b) 14 (c) not enough info (d) 54
34. 34.🧩 Vihaan bought 4 markers and a lunch box for ₹80 in all. Each marker cost the same. What did one marker cost? (a) ₹76 (b) ₹20 (c) ₹80 (d) not enough info
35. 35.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
36. 36.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
37. 37.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 6 (b) not enough info (c) 60 (d) 12
38. 38.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 10 (b) 5 (c) 50 (d) not enough info
39. 39.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 2 PM (c) 5 PM (d) not enough info
40. 40.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 9 PM (d) 8 PM

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