Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 237 · 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.🧩 Aarav bought 6 markers and a water bottle for ₹360 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹360 (c) not enough info (d) ₹354
2. 2.🐕 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
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
4. 4.🧩 Ananya is 11 years old. Saanvi is 3 years older than Ananya. How old is Saanvi? (a) not enough info (b) 3 (c) 15 (d) 14
5. 5.🧩 Ananya bought 2 markers for ₹110 in all. Each marker cost the same. What did one marker cost? (a) ₹55 (b) ₹60 (c) not enough info (d) ₹110
6. 6.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 9 PM (b) 6 PM (c) 8 PM (d) not enough info
7. 7.🧩 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
8. 8.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) 7 PM (c) 8 PM (d) not enough info
9. 9.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
10. 10.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
11. 11.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
12. 12.🧩 Vihaan bought 6 kites for ₹360 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹65 (c) ₹360 (d) ₹60
13. 13.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
14. 14.🧩 A box has 7 rows of oranges, with 5 in each row. How many oranges are in the box? (a) not enough info (b) 40 (c) 35 (d) 12
15. 15.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
16. 16.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
17. 17.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info
18. 18.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
19. 19.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking your pet (d) asking one friend
20. 20.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to change answers (d) to be sure of results
21. 21.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
22. 22.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 3 PM (c) 4 PM (d) not enough info
23. 23.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
24. 24.🧩 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
25. 25.🧩 Aarav bought 2 balls and a water bottle for ₹150 in all. Each ball cost the same. What did one ball cost? (a) ₹148 (b) not enough info (c) ₹75 (d) ₹150
26. 26.🧩 Diya bought 2 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) not enough info (c) ₹30 (d) ₹60
27. 27.🧩 Kabir bought 3 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹60 (b) ₹180 (c) ₹65 (d) not enough info
28. 28.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a loud opinion (d) a guess
29. 29.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 6 (b) not enough info (c) 12 (d) 60
30. 30.🧩 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
31. 31.🧩 Tara bought 2 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹90 (c) not enough info (d) ₹45
32. 32.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
33. 33.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) 9 PM (d) not enough info
34. 34.🧩 Ananya is 12 years old. Kabir is 9 years older than Ananya. How old is Kabir? (a) 22 (b) not enough info (c) 9 (d) 21
35. 35.🧩 Vihaan bought 3 markers and a water bottle for ₹80 in all. Each marker cost the same. What did one marker cost? (a) ₹77 (b) ₹80 (c) not enough info (d) ₹26
36. 36.🧩 A box has 8 rows of apples, with 5 in each row. How many apples are in the box? (a) not enough info (b) 13 (c) 40 (d) 45
37. 37.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
38. 38.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) 5 PM (c) not enough info (d) 6 PM
39. 39.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
40. 40.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False

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