Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 731 · 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? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
2. 2.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
3. 3.🧩 Vihaan bought 2 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹30 (c) ₹35 (d) ₹60
4. 4.🧩 Ishaan bought 3 pens for ₹135 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹135 (c) not enough info (d) ₹45
5. 5.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
6. 6.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) never see dogs (d) all dogs are mean
7. 7.🥭 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) yes, mangoes match (d) no, check more
8. 8.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
9. 9.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
11. 11.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
12. 12.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 5 PM (d) 4 PM
13. 13.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a loud opinion (d) a guess
14. 14.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 18 (b) not enough info (c) 90 (d) 9
15. 15.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
16. 16.🧩 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
17. 17.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 6 PM (d) not enough info
18. 18.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) not enough info (b) 90 (c) 9 (d) 18
19. 19.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
20. 20.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
21. 21.🧩 Kabir bought 5 balls for ₹200 in all. Each ball cost the same. What did one ball cost? (a) ₹200 (b) ₹40 (c) ₹45 (d) not enough info
22. 22.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) for fun only (d) to change answers
23. 23.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 8 (b) 4 (c) not enough info (d) 40
24. 24.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
25. 25.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
26. 26.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
27. 27.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 9 PM
28. 28.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
29. 29.🧩 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
30. 30.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
31. 31.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 7 PM (d) 6 PM
32. 32.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 8 PM (b) 5 PM (c) 9 PM (d) not enough info
33. 33.🧩 Tara is 12 years old. Ananya is 5 years older than Tara. How old is Ananya? (a) 5 (b) not enough info (c) 17 (d) 18
34. 34.🧩 Nisha is 11 years old. Aarav is older than Nisha. How old is Aarav? (a) 12 (b) not enough info (c) 16 (d) 13
35. 35.🧩 Aarav bought 6 mangoes for ₹60 in all. Each mango cost the same. What did one mango cost? (a) ₹15 (b) ₹60 (c) not enough info (d) ₹10
36. 36.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
37. 37.🧩 Diya is 9 years old. Ishaan is older than Diya. How old is Ishaan? (a) not enough info (b) 10 (c) 11 (d) 14
38. 38.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
39. 39.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 3 PM
40. 40.🧩 Ananya bought 2 notebooks for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) ₹55 (c) not enough info (d) ₹110

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