Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 378 · 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.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking one friend (d) asking the whole class
2. 2.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
3. 3.🥭 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) no, check more (d) yes, mangoes match
4. 4.🧩 A box has 8 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 72 (b) 81 (c) 17 (d) not enough info
5. 5.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) for fun only (d) to change answers
6. 6.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 4 PM
7. 7.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
8. 8.🧩 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
9. 9.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
10. 10.🧩 A box has 8 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) not enough info (b) 72 (c) 64 (d) 16
11. 11.🐕 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
12. 12.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
13. 13.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 80 (b) not enough info (c) 16 (d) 8
14. 14.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 3 PM (c) 7 PM (d) not enough info
15. 15.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 4 PM (d) 8 PM
16. 16.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 9 PM
17. 17.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
18. 18.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a guess (d) a loud opinion
19. 19.🧩 A box has 5 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 20 (b) not enough info (c) 9 (d) 24
20. 20.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
21. 21.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
22. 22.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
23. 23.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
24. 24.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
25. 25.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Kabir bought 6 pens for ₹210 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) not enough info (c) ₹40 (d) ₹210
27. 27.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 6 PM
28. 28.🧩 Saanvi is 7 years old. Tara is older than Saanvi. How old is Tara? (a) 8 (b) 12 (c) 9 (d) not enough info
29. 29.🧩 Arjun bought 6 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹120 (c) ₹25 (d) ₹20
30. 30.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) not enough info (b) 8 (c) 80 (d) 16
31. 31.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 6 PM
32. 32.🧩 A box has 3 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 12 (b) 16 (c) 7 (d) not enough info
33. 33.🧩 Kabir bought 5 kites and a water bottle for ₹245 in all. Each kite cost the same. What did one kite cost? (a) ₹245 (b) ₹240 (c) ₹49 (d) not enough info
34. 34.🧩 Tara bought 6 pens and a water bottle for ₹140 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹23 (c) ₹140 (d) ₹134
35. 35.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 8 (b) 4 (c) 40 (d) not enough info
36. 36.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 2 PM (d) 5 PM
37. 37.🧩 A box has 8 rows of apples, with 8 in each row. How many apples are in the box? (a) 64 (b) 72 (c) not enough info (d) 16
38. 38.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
39. 39.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
40. 40.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 7 PM

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