Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 333 · 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.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 6 PM
2. 2.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 5 PM
3. 3.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
4. 4.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
5. 5.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 4 PM
6. 6.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
7. 7.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
8. 8.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) asking the whole class (d) guessing
10. 10.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
11. 11.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
12. 12.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
13. 13.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
14. 14.🧩 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
15. 15.🧩 Arjun is 12 years old. Aarav is 8 years older than Arjun. How old is Aarav? (a) 20 (b) 8 (c) not enough info (d) 21
16. 16.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
17. 17.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
18. 18.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
19. 19.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
20. 20.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) dogs hate you (d) that one dog barked
21. 21.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
22. 22.🧩 Tara bought 5 markers for ₹225 in all. Each marker cost the same. What did one marker cost? (a) ₹45 (b) ₹225 (c) ₹50 (d) not enough info
23. 23.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 7 PM (b) not enough info (c) 5 PM (d) 6 PM
24. 24.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) not enough info (c) 6 PM (d) 7 PM
25. 25.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
26. 26.🧩 Saanvi is 11 years old. Ananya is 9 years older than Saanvi. How old is Ananya? (a) 9 (b) not enough info (c) 21 (d) 20
27. 27.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
28. 28.🧩 Kabir is 6 years old. Rohan is older than Kabir. How old is Rohan? (a) 7 (b) 11 (c) 8 (d) not enough info
29. 29.🧩 A box has 4 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 40 (b) 32 (c) 12 (d) not enough info
30. 30.🧩 A box has 6 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 56 (b) 48 (c) not enough info (d) 14
31. 31.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) facts that support it (d) a rumour
32. 32.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
33. 33.🧩 A box has 4 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 24 (b) 10 (c) 30 (d) not enough info
34. 34.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
35. 35.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to change answers (d) to be sure of results
36. 36.🧩 Meera bought 4 pens and a water bottle for ₹70 in all. Each pen cost the same. What did one pen cost? (a) ₹66 (b) not enough info (c) ₹17 (d) ₹70
37. 37.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
38. 38.🧩 Kabir bought 5 balls for ₹175 in all. Each ball cost the same. What did one ball cost? (a) ₹175 (b) ₹35 (c) not enough info (d) ₹40
39. 39.🧩 A box has 7 rows of apples, with 6 in each row. How many apples are in the box? (a) 13 (b) 42 (c) not enough info (d) 48
40. 40.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 4 PM (c) 8 PM (d) not enough info

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