Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 918 · 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 tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
2. 2.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
3. 3.🧩 Kabir bought 5 mangoes and a lunch box for ₹320 in all. Each mango cost the same. What did one mango cost? (a) ₹315 (b) ₹64 (c) not enough info (d) ₹320
4. 4.🥭 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, it is certain (c) yes, mangoes match (d) no mango is sweet
5. 5.🧩 Meera is 7 years old. Saanvi is 4 years older than Meera. How old is Saanvi? (a) 12 (b) 11 (c) 4 (d) not enough info
6. 6.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
7. 7.🧩 Arjun is 11 years old. Tara is 2 years older than Arjun. How old is Tara? (a) 2 (b) 14 (c) not enough info (d) 13
8. 8.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
9. 9.🧩 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
10. 10.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
11. 11.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 7 PM (c) 8 PM (d) not enough info
12. 12.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) never see dogs (d) all dogs are mean
13. 13.🧩 Arjun bought 5 kites and a bag for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹18 (b) not enough info (c) ₹85 (d) ₹90
14. 14.🧩 A box has 4 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 9 (b) not enough info (c) 20 (d) 25
15. 15.🧩 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
16. 16.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
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) False (b) True
18. 18.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 2 PM (c) 6 PM (d) not enough info
19. 19.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
20. 20.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) for fun only (d) to be sure of results
21. 21.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
22. 22.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
23. 23.🧩 Saanvi bought 4 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹30 (b) ₹100 (c) ₹25 (d) not enough info
24. 24.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
25. 25.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
26. 26.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
27. 27.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
28. 28.🧩 Aarav is 10 years old. Meera is 5 years older than Aarav. How old is Meera? (a) 5 (b) 16 (c) 15 (d) not enough info
29. 29.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 7 PM
30. 30.🧩 Meera is 10 years old. Aarav is 4 years older than Meera. How old is Aarav? (a) 4 (b) not enough info (c) 14 (d) 15
31. 31.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
32. 32.🧩 Tara bought 6 pens and a cap for ₹170 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹170 (c) ₹164 (d) ₹28
33. 33.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 2 PM (d) 3 PM
34. 34.🧩 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
35. 35.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
36. 36.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) 7 (b) 14 (c) 70 (d) not enough info
37. 37.🧩 Kabir bought 6 mangoes and a cap for ₹350 in all. Each mango cost the same. What did one mango cost? (a) ₹58 (b) ₹350 (c) ₹344 (d) not enough info
38. 38.🧩 A box has 6 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) not enough info (b) 48 (c) 56 (d) 14
39. 39.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 80 (b) 16 (c) 8 (d) not enough info
40. 40.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 6 PM

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