Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 359 · 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. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 3 PM (d) not enough info
2. 2.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 2 PM
3. 3.🧩 A box has 4 rows of oranges, with 6 in each row. How many oranges are in the box? (a) not enough info (b) 30 (c) 10 (d) 24
4. 4.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) dogs hate you (d) all dogs are mean
5. 5.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
6. 6.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
7. 7.🧩 Kabir bought 2 mangoes for ₹20 in all. Each mango cost the same. What did one mango cost? (a) ₹15 (b) not enough info (c) ₹10 (d) ₹20
8. 8.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
9. 9.🧩 Kabir is 7 years old. Diya is older than Kabir. How old is Diya? (a) not enough info (b) 8 (c) 9 (d) 12
10. 10.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
11. 11.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
12. 12.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
13. 13.🧩 Diya bought 5 markers for ₹125 in all. Each marker cost the same. What did one marker cost? (a) ₹30 (b) ₹25 (c) not enough info (d) ₹125
14. 14.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 5 PM (c) 8 PM (d) not enough info
15. 15.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
16. 16.🧩 A box has 8 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 13 (b) 40 (c) 45 (d) not enough info
17. 17.🧩 Ananya bought 5 pens for ₹225 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) not enough info (c) ₹45 (d) ₹225
18. 18.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
19. 19.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
21. 21.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
22. 22.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 6 PM
23. 23.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
24. 24.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
25. 25.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
26. 26.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) asking one friend (d) guessing
27. 27.🥭 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) yes, mangoes match (c) no mango is sweet (d) no, check more
28. 28.🧩 Vihaan bought 4 notebooks and a bag for ₹330 in all. Each notebook cost the same. What did one notebook cost? (a) ₹326 (b) ₹82 (c) not enough info (d) ₹330
29. 29.🧩 Meera is 12 years old. Ishaan is 5 years older than Meera. How old is Ishaan? (a) not enough info (b) 18 (c) 5 (d) 17
30. 30.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to be sure of results (d) to waste time
31. 31.🧩 Ananya is 10 years old. Saanvi is older than Ananya. How old is Saanvi? (a) 15 (b) 11 (c) not enough info (d) 12
32. 32.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 8 PM (d) 7 PM
33. 33.🧩 Ishaan bought 5 markers for ₹150 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹35 (c) ₹30 (d) ₹150
34. 34.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
35. 35.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 40 (b) 4 (c) 8 (d) not enough info
36. 36.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 7 PM (d) 8 PM
37. 37.🧩 Arjun bought 5 markers for ₹250 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹50 (c) ₹250 (d) ₹55
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.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
40. 40.🧩 Kabir is 8 years old. Ananya is older than Kabir. How old is Ananya? (a) 9 (b) not enough info (c) 13 (d) 10

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