Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 204 · 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? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
2. 2.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
3. 3.🥭 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) yes, mangoes match (c) no, check more (d) no mango is sweet
4. 4.🧩 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
5. 5.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
7. 7.🧩 Aarav is 11 years old. Nisha is older than Aarav. How old is Nisha? (a) 13 (b) 16 (c) 12 (d) not enough info
8. 8.🧩 Diya bought 4 mangoes for ₹40 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹40 (c) ₹15 (d) ₹10
9. 9.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a rumour (d) a loud opinion
10. 10.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
11. 11.🧩 Arjun is 12 years old. Kabir is older than Arjun. How old is Kabir? (a) not enough info (b) 13 (c) 14 (d) 17
12. 12.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking one friend (d) asking the whole class
13. 13.🧩 Meera bought 4 notebooks and a water bottle for ₹170 in all. Each notebook cost the same. What did one notebook cost? (a) ₹42 (b) ₹166 (c) not enough info (d) ₹170
14. 14.🧩 Ananya is 12 years old. Vihaan is 4 years older than Ananya. How old is Vihaan? (a) 4 (b) 16 (c) 17 (d) not enough info
15. 15.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
16. 16.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
17. 17.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) that one dog barked (d) all dogs are mean
18. 18.🧩 Arjun is 9 years old. Ananya is older than Arjun. How old is Ananya? (a) 11 (b) not enough info (c) 14 (d) 10
19. 19.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) 14 (b) 70 (c) 7 (d) not enough info
20. 20.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 5 PM (c) 8 PM (d) 9 PM
21. 21.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 16 (b) not enough info (c) 80 (d) 8
22. 22.🧩 Diya is 7 years old. Saanvi is 4 years older than Diya. How old is Saanvi? (a) not enough info (b) 4 (c) 11 (d) 12
23. 23.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 6 PM (c) 3 PM (d) not enough info
24. 24.🧩 Ishaan bought 3 markers and a bag for ₹240 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹80 (c) ₹237 (d) ₹240
25. 25.🧩 Tara bought 6 notebooks for ₹240 in all. Each notebook cost the same. What did one notebook cost? (a) ₹45 (b) not enough info (c) ₹40 (d) ₹240
26. 26.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
27. 27.🧩 Ishaan bought 3 mangoes and a bag for ₹200 in all. Each mango cost the same. What did one mango cost? (a) ₹66 (b) ₹197 (c) ₹200 (d) not enough info
28. 28.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
29. 29.🧩 Meera bought 3 mangoes for ₹105 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹40 (c) ₹35 (d) ₹105
30. 30.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
31. 31.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
32. 32.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 14 (b) 7 (c) not enough info (d) 70
33. 33.🧩 Arjun is 10 years old. Saanvi is 4 years older than Arjun. How old is Saanvi? (a) not enough info (b) 4 (c) 14 (d) 15
34. 34.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 8 PM
35. 35.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
36. 36.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
37. 37.🧩 Arjun is 8 years old. Ananya is 7 years older than Arjun. How old is Ananya? (a) 16 (b) 7 (c) 15 (d) not enough info
38. 38.🧩 Kabir bought 6 kites for ₹90 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹20 (c) ₹15 (d) ₹90
39. 39.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
40. 40.🧩 Ananya is 10 years old. Saanvi is 3 years older than Ananya. How old is Saanvi? (a) not enough info (b) 14 (c) 13 (d) 3

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