Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 425 · 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.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
2. 2.🧩 Ananya is 7 years old. Diya is 5 years older than Ananya. How old is Diya? (a) 13 (b) 12 (c) not enough info (d) 5
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) guessing (d) asking one friend
4. 4.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 6 PM
5. 5.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) 8 PM (c) not enough info (d) 7 PM
6. 6.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
7. 7.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
8. 8.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) a loud opinion (d) facts that support it
9. 9.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
11. 11.🧩 A box has 4 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 28 (b) not enough info (c) 11 (d) 35
12. 12.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
13. 13.🧩 Tara is 12 years old. Vihaan is older than Tara. How old is Vihaan? (a) 17 (b) 13 (c) not enough info (d) 14
14. 14.🧩 A box has 3 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 8 (b) 20 (c) 15 (d) not enough info
15. 15.🧩 Saanvi bought 2 markers for ₹40 in all. Each marker cost the same. What did one marker cost? (a) ₹25 (b) not enough info (c) ₹20 (d) ₹40
16. 16.🧩 Vihaan bought 5 markers and a bag for ₹380 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹76 (c) ₹375 (d) ₹380
17. 17.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
18. 18.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 3 PM
19. 19.🧩 Arjun bought 6 pens and a water bottle for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) not enough info (c) ₹144 (d) ₹150
20. 20.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to change answers (d) to be sure of results
21. 21.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 10 (b) not enough info (c) 50 (d) 5
22. 22.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
23. 23.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 5 (b) not enough info (c) 50 (d) 10
24. 24.🧩 Diya bought 2 kites for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) ₹90 (c) not enough info (d) ₹50
25. 25.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 70 (b) 7 (c) 14 (d) not enough info
26. 26.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
27. 27.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) 7 PM (c) not enough info (d) 6 PM
28. 28.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
29. 29.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
30. 30.🧩 A box has 6 rows of apples, with 8 in each row. How many apples are in the box? (a) 14 (b) 56 (c) 48 (d) not enough info
31. 31.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
32. 32.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 6 PM
33. 33.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 9 PM (b) 8 PM (c) 6 PM (d) not enough info
34. 34.🧩 Meera bought 4 markers for ₹40 in all. Each marker cost the same. What did one marker cost? (a) ₹15 (b) ₹40 (c) ₹10 (d) not enough info
35. 35.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) never see dogs (d) that one dog barked
36. 36.🧩 Ananya bought 4 markers and a bag for ₹180 in all. Each marker cost the same. What did one marker cost? (a) ₹45 (b) not enough info (c) ₹180 (d) ₹176
37. 37.🧩 A box has 3 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 20 (b) not enough info (c) 15 (d) 8
38. 38.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
39. 39.🧩 A box has 7 rows of oranges, with 7 in each row. How many oranges are in the box? (a) not enough info (b) 49 (c) 14 (d) 56
40. 40.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True

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