Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 59 · 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.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) guessing (d) asking your pet
2. 2.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
3. 3.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
4. 4.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 5 PM
5. 5.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 8 PM (d) 7 PM
6. 6.🐕 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
7. 7.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 2 PM
8. 8.🥭 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
9. 9.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
10. 10.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
11. 11.🧩 Nisha bought 6 mangoes for ₹240 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹45 (c) ₹40 (d) ₹240
12. 12.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 6 (b) 12 (c) 60 (d) not enough info
13. 13.🧩 Saanvi is 8 years old. Vihaan is older than Saanvi. How old is Vihaan? (a) 9 (b) not enough info (c) 13 (d) 10
14. 14.🧩 Vihaan bought 6 mangoes and a water bottle for ₹400 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹394 (c) ₹400 (d) ₹66
15. 15.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
16. 16.🧩 Vihaan bought 2 mangoes and a bag for ₹180 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹90 (c) ₹178 (d) ₹180
17. 17.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 4 (b) 8 (c) 40 (d) not enough info
18. 18.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 8 PM (d) 9 PM
19. 19.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 6 PM
20. 20.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
21. 21.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
22. 22.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 8 PM (d) 7 PM
23. 23.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a loud opinion (d) a rumour
24. 24.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) not enough info (c) 4 PM (d) 5 PM
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 asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
27. 27.🧩 Diya bought 6 kites and a water bottle for ₹390 in all. Each kite cost the same. What did one kite cost? (a) ₹384 (b) not enough info (c) ₹390 (d) ₹65
28. 28.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
29. 29.🧩 Ananya is 9 years old. Saanvi is older than Ananya. How old is Saanvi? (a) 10 (b) 11 (c) 14 (d) not enough info
30. 30.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) to waste time (d) for fun only
31. 31.🧩 Nisha is 6 years old. Saanvi is 8 years older than Nisha. How old is Saanvi? (a) 14 (b) not enough info (c) 8 (d) 15
32. 32.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 7 PM (d) 8 PM
33. 33.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
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 and lasts 1 hour. When does it end? (a) 2 PM (b) 4 PM (c) 3 PM (d) not enough info
36. 36.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
37. 37.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 5 (b) 10 (c) not enough info (d) 50
38. 38.🧩 A box has 3 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 36 (b) 12 (c) not enough info (d) 27
39. 39.🧩 Kabir is 12 years old. Ishaan is 5 years older than Kabir. How old is Ishaan? (a) 5 (b) not enough info (c) 17 (d) 18
40. 40.🧩 Ananya bought 2 mangoes for ₹60 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹35 (c) ₹30 (d) ₹60

Free critical thinking lessons, practice and worksheets at talentjr.in/critical-thinking-for-kids