Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 400 · 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.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
2. 2.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) asking your pet (d) guessing
4. 4.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
5. 5.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
6. 6.🧩 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
7. 7.🧩 Diya is 12 years old. Tara is older than Diya. How old is Tara? (a) 17 (b) 14 (c) 13 (d) not enough info
8. 8.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
9. 9.🧩 Arjun is 11 years old. Ananya is older than Arjun. How old is Ananya? (a) 12 (b) not enough info (c) 16 (d) 13
10. 10.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
11. 11.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
12. 12.🧩 A box has 5 rows of eggs, with 8 in each row. How many eggs are in the box? (a) not enough info (b) 40 (c) 13 (d) 48
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 3 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 4 PM
15. 15.🧩 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
16. 16.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 7 PM (c) 4 PM (d) not enough info
17. 17.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 9 PM
18. 18.🧩 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
19. 19.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
20. 20.🧩 Rohan bought 5 notebooks and a lunch box for ₹295 in all. Each notebook cost the same. What did one notebook cost? (a) ₹290 (b) ₹295 (c) not enough info (d) ₹59
21. 21.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 3 PM (c) not enough info (d) 5 PM
22. 22.🧩 A box has 4 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 11 (b) 35 (c) not enough info (d) 28
23. 23.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 40 (b) 8 (c) not enough info (d) 4
24. 24.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) 5 PM (c) not enough info (d) 6 PM
25. 25.🧩 Aarav is 12 years old. Ishaan is 6 years older than Aarav. How old is Ishaan? (a) 19 (b) 18 (c) 6 (d) not enough info
26. 26.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) never see dogs (d) that one dog barked
27. 27.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
28. 28.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
29. 29.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 7 PM (d) not enough info
30. 30.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
31. 31.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
32. 32.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
33. 33.🧩 Kabir is 9 years old. Vihaan is older than Kabir. How old is Vihaan? (a) 11 (b) 10 (c) not enough info (d) 14
34. 34.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
35. 35.🧩 A box has 4 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 12 (b) not enough info (c) 40 (d) 32
36. 36.🥭 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
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.🧩 Aarav is 10 years old. Ananya is older than Aarav. How old is Ananya? (a) 11 (b) 15 (c) 12 (d) not enough info
39. 39.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
40. 40.🧩 Ananya is 9 years old. Tara is older than Ananya. How old is Tara? (a) 14 (b) 10 (c) not enough info (d) 11

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