Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 576 · 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.🧩 Vihaan bought 2 mangoes for ₹30 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹20 (c) ₹15 (d) ₹30
2. 2.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 4 PM
3. 3.🥭 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
4. 4.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) not enough info (d) 6 PM
5. 5.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 9 PM (c) not enough info (d) 7 PM
6. 6.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
7. 7.🧩 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
8. 8.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 5 PM
9. 9.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
10. 10.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
11. 11.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
12. 12.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
13. 13.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
14. 14.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
15. 15.🧩 Vihaan is 7 years old. Meera is older than Vihaan. How old is Meera? (a) not enough info (b) 8 (c) 9 (d) 12
16. 16.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) a loud opinion (d) facts that support it
17. 17.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
18. 18.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
19. 19.🧩 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
20. 20.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
21. 21.🧩 Ananya bought 5 pens for ₹200 in all. Each pen cost the same. What did one pen cost? (a) ₹45 (b) ₹40 (c) ₹200 (d) not enough info
22. 22.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 6 PM
23. 23.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to change answers (d) to be sure of results
24. 24.🧩 Nisha is 6 years old. Diya is older than Nisha. How old is Diya? (a) 7 (b) 8 (c) not enough info (d) 11
25. 25.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
26. 26.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 8 PM (c) 5 PM (d) 9 PM
27. 27.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 7 PM
28. 28.🧩 Kabir is 8 years old. Rohan is older than Kabir. How old is Rohan? (a) 9 (b) 10 (c) not enough info (d) 13
29. 29.🧩 Nisha is 7 years old. Diya is 8 years older than Nisha. How old is Diya? (a) 8 (b) 16 (c) not enough info (d) 15
30. 30.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
31. 31.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
32. 32.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking the whole class (d) asking your pet
33. 33.🧩 A box has 3 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 9 (b) 18 (c) not enough info (d) 24
34. 34.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
35. 35.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 4 PM
36. 36.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
37. 37.🧩 Kabir bought 6 balls for ₹150 in all. Each ball cost the same. What did one ball cost? (a) ₹30 (b) ₹150 (c) not enough info (d) ₹25
38. 38.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
39. 39.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
40. 40.🧩 Vihaan bought 3 pens and a water bottle for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) not enough info (c) ₹147 (d) ₹150

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