Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 814 · 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.🧩 Ishaan is 6 years old. Arjun is older than Ishaan. How old is Arjun? (a) 7 (b) not enough info (c) 8 (d) 11
2. 2.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
3. 3.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 9 PM (d) 8 PM
4. 4.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
5. 5.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
6. 6.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) 8 PM (c) 7 PM (d) not enough info
7. 7.🧩 Diya is 7 years old. Ishaan is 2 years older than Diya. How old is Ishaan? (a) 9 (b) 2 (c) 10 (d) not enough info
8. 8.True or false: “We tried the new route for 10 days, and it was faster every day.” 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.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 6 PM
11. 11.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
12. 12.🧩 Kabir bought 2 notebooks and a bag for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) not enough info (c) ₹100 (d) ₹98
13. 13.🧩 A box has 3 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 7 (b) 12 (c) not enough info (d) 16
14. 14.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
15. 15.🧩 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
16. 16.🧩 Saanvi is 11 years old. Kabir is older than Saanvi. How old is Kabir? (a) 12 (b) 16 (c) 13 (d) not enough info
17. 17.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
18. 18.🧩 Meera is 10 years old. Rohan is 4 years older than Meera. How old is Rohan? (a) 4 (b) 14 (c) 15 (d) not enough info
19. 19.🧩 Vihaan bought 4 kites for ₹40 in all. Each kite cost the same. What did one kite cost? (a) ₹15 (b) not enough info (c) ₹40 (d) ₹10
20. 20.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) 8 (b) not enough info (c) 80 (d) 16
21. 21.🧩 Rohan bought 6 pens and a cap for ₹320 in all. Each pen cost the same. What did one pen cost? (a) ₹53 (b) not enough info (c) ₹314 (d) ₹320
22. 22.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
23. 23.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
24. 24.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) facts that support it (d) a rumour
25. 25.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
26. 26.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
27. 27.🧩 Tara bought 6 markers and a lunch box for ₹210 in all. Each marker cost the same. What did one marker cost? (a) ₹210 (b) not enough info (c) ₹204 (d) ₹35
28. 28.🧩 Kabir is 7 years old. Rohan is older than Kabir. How old is Rohan? (a) 9 (b) 12 (c) 8 (d) not enough info
29. 29.🧩 A box has 6 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 11 (b) not enough info (c) 35 (d) 30
30. 30.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) yes, it is certain (c) no, check more (d) no mango is sweet
31. 31.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
32. 32.🧩 Diya is 7 years old. Aarav is 2 years older than Diya. How old is Aarav? (a) 2 (b) 10 (c) 9 (d) not enough info
33. 33.🧩 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
34. 34.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
35. 35.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 9 PM (d) 8 PM
36. 36.🧩 Rohan bought 2 mangoes and a lunch box for ₹90 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹88 (c) ₹45 (d) ₹90
37. 37.🧩 A box has 8 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 45 (b) 13 (c) not enough info (d) 40
38. 38.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
39. 39.🧩 Meera is 8 years old. Kabir is older than Meera. How old is Kabir? (a) not enough info (b) 9 (c) 10 (d) 13
40. 40.🧩 Tara is 9 years old. Diya is older than Tara. How old is Diya? (a) not enough info (b) 14 (c) 11 (d) 10

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