Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 665 · 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 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 5 PM (c) 2 PM (d) not enough info
2. 2.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
3. 3.🧩 Ananya bought 3 pens and a water bottle for ₹210 in all. Each pen cost the same. What did one pen cost? (a) ₹70 (b) ₹207 (c) not enough info (d) ₹210
4. 4.🧩 A box has 5 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 13 (b) not enough info (c) 40 (d) 48
5. 5.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
6. 6.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
7. 7.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) 5 PM (c) 6 PM (d) not enough info
8. 8.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 9 PM (d) 8 PM
9. 9.🧩 Diya is 8 years old. Kabir is 7 years older than Diya. How old is Kabir? (a) 15 (b) 7 (c) not enough info (d) 16
10. 10.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
11. 11.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
12. 12.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 7 PM
13. 13.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
14. 14.🧩 Aarav is 6 years old. Diya is 4 years older than Aarav. How old is Diya? (a) 10 (b) 11 (c) 4 (d) not enough info
15. 15.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
16. 16.🧩 Ishaan bought 4 markers and a lunch box for ₹250 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹62 (c) ₹246 (d) ₹250
17. 17.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) guessing (d) asking the whole class
18. 18.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
19. 19.🧩 Tara is 8 years old. Ananya is older than Tara. How old is Ananya? (a) 9 (b) 10 (c) 13 (d) not enough info
20. 20.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) a loud opinion (d) facts that support it
21. 21.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, mangoes match (c) no mango is sweet (d) yes, it is certain
22. 22.🧩 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
23. 23.🧩 Vihaan is 6 years old. Tara is older than Vihaan. How old is Tara? (a) 11 (b) 8 (c) not enough info (d) 7
24. 24.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 10 (b) 50 (c) 5 (d) not enough info
25. 25.🧩 Diya is 7 years old. Saanvi is older than Diya. How old is Saanvi? (a) not enough info (b) 9 (c) 12 (d) 8
26. 26.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
27. 27.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) not enough info (b) 8 (c) 80 (d) 16
28. 28.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
29. 29.🧩 Meera bought 6 notebooks for ₹270 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) ₹45 (c) not enough info (d) ₹270
30. 30.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) never see dogs (d) all dogs are mean
31. 31.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 9 PM (c) 8 PM (d) not enough info
32. 32.🧩 Ananya is 7 years old. Diya is 3 years older than Ananya. How old is Diya? (a) 11 (b) 10 (c) not enough info (d) 3
33. 33.🧩 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
34. 34.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) 6 PM (d) not enough info
35. 35.🧩 Aarav is 9 years old. Saanvi is older than Aarav. How old is Saanvi? (a) 14 (b) 11 (c) not enough info (d) 10
36. 36.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
37. 37.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 3 PM (c) not enough info (d) 4 PM
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.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
40. 40.🧩 Kabir bought 6 mangoes and a lunch box for ₹140 in all. Each mango cost the same. What did one mango cost? (a) ₹23 (b) ₹140 (c) not enough info (d) ₹134

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