Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 852 · 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.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 70 (b) not enough info (c) 7 (d) 14
2. 2.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
3. 3.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 3 PM
4. 4.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
5. 5.🧩 Rohan is 9 years old. Saanvi is older than Rohan. How old is Saanvi? (a) not enough info (b) 10 (c) 11 (d) 14
6. 6.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
7. 7.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) 9 PM (c) not enough info (d) 6 PM
8. 8.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 8 PM (d) 9 PM
9. 9.🧩 Meera bought 5 kites for ₹125 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹125 (c) ₹25 (d) ₹30
10. 10.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
11. 11.🧩 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
12. 12.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
13. 13.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
14. 14.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) 6 PM (d) not enough info
15. 15.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
16. 16.🧩 Ishaan bought 2 pens for ₹110 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹60 (c) ₹110 (d) ₹55
17. 17.🧩 Ananya bought 3 pens for ₹165 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) ₹55 (c) ₹165 (d) not enough info
18. 18.🧩 A box has 7 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 40 (b) 12 (c) not enough info (d) 35
19. 19.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 5 PM (c) not enough info (d) 4 PM
20. 20.🧩 Diya bought 3 mangoes for ₹75 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹25 (c) ₹30 (d) ₹75
21. 21.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) to be sure of results (d) for fun only
22. 22.🧩 Meera bought 5 kites and a lunch box for ₹250 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹245 (c) ₹250 (d) ₹50
23. 23.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 7 PM (c) not enough info (d) 8 PM
24. 24.🧩 A box has 4 rows of guavas, with 9 in each row. How many guavas are in the box? (a) not enough info (b) 36 (c) 13 (d) 45
25. 25.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) 6 PM (d) not enough info
26. 26.🧩 Ishaan is 9 years old. Rohan is older than Ishaan. How old is Rohan? (a) 11 (b) not enough info (c) 10 (d) 14
27. 27.🧩 A box has 6 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 42 (b) not enough info (c) 36 (d) 12
28. 28.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
29. 29.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
30. 30.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) all dogs are mean (d) dogs hate you
31. 31.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 5 PM
32. 32.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) no mango is sweet (c) yes, mangoes match (d) no, check more
33. 33.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
34. 34.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a loud opinion (d) a rumour
35. 35.🧩 Ananya bought 6 mangoes and a lunch box for ₹350 in all. Each mango cost the same. What did one mango cost? (a) ₹58 (b) not enough info (c) ₹344 (d) ₹350
36. 36.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
37. 37.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
38. 38.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 5 PM
39. 39.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
40. 40.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 2 PM (c) 3 PM (d) 4 PM

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