Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 654 · 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) asking your pet (b) guessing (c) asking one friend (d) asking the whole class
2. 2.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 2 PM
3. 3.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
4. 4.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 8 PM (b) 9 PM (c) 5 PM (d) not enough info
5. 5.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Vihaan is 7 years old. Tara is 4 years older than Vihaan. How old is Tara? (a) not enough info (b) 4 (c) 11 (d) 12
7. 7.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) never see dogs (d) dogs hate you
8. 8.🧩 Vihaan is 8 years old. Kabir is 7 years older than Vihaan. How old is Kabir? (a) 15 (b) 7 (c) 16 (d) not enough info
9. 9.🧩 Meera bought 2 markers for ₹100 in all. Each marker cost the same. What did one marker cost? (a) ₹100 (b) not enough info (c) ₹55 (d) ₹50
10. 10.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
11. 11.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 3 PM
12. 12.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 5 PM
13. 13.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a rumour (d) a guess
14. 14.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) not enough info (b) 4 (c) 8 (d) 40
15. 15.🧩 Saanvi is 8 years old. Meera is older than Saanvi. How old is Meera? (a) 9 (b) 10 (c) not enough info (d) 13
16. 16.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
17. 17.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
18. 18.🧩 A box has 4 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 36 (b) not enough info (c) 45 (d) 13
19. 19.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
20. 20.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
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 mango is sweet (b) yes, it is certain (c) yes, mangoes match (d) no, check more
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.🧩 Vihaan bought 4 mangoes for ₹60 in all. Each mango cost the same. What did one mango cost? (a) ₹15 (b) not enough info (c) ₹60 (d) ₹20
24. 24.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
25. 25.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) 9 PM (d) not enough info
26. 26.🧩 Vihaan bought 6 markers and a cap for ₹260 in all. Each marker cost the same. What did one marker cost? (a) ₹43 (b) ₹254 (c) not enough info (d) ₹260
27. 27.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
28. 28.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to be sure of results (d) to waste time
29. 29.🧩 A box has 3 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 24 (b) 18 (c) not enough info (d) 9
30. 30.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
31. 31.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
32. 32.🧩 Kabir is 12 years old. Rohan is 4 years older than Kabir. How old is Rohan? (a) not enough info (b) 4 (c) 16 (d) 17
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.🧩 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
35. 35.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 8 PM (d) 7 PM
36. 36.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 6 PM
37. 37.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
38. 38.🧩 Aarav bought 4 pens and a lunch box for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) ₹116 (c) not enough info (d) ₹120
39. 39.🧩 Ananya bought 3 mangoes for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹90 (b) ₹35 (c) not enough info (d) ₹30
40. 40.🧩 Saanvi is 11 years old. Aarav is older than Saanvi. How old is Aarav? (a) 16 (b) not enough info (c) 12 (d) 13

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