Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 662 · 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.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
2. 2.🧩 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
3. 3.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) dogs hate you (d) all dogs are mean
4. 4.🥭 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) no, check more (c) no mango is sweet (d) yes, mangoes match
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking your pet (d) asking one friend
6. 6.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
7. 7.🧩 Saanvi is 7 years old. Arjun is older than Saanvi. How old is Arjun? (a) 12 (b) not enough info (c) 9 (d) 8
8. 8.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) not enough info (b) 16 (c) 80 (d) 8
9. 9.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 2 PM (d) 4 PM
10. 10.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 8 PM (c) 7 PM (d) not enough info
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 asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
13. 13.🧩 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
14. 14.🧩 Saanvi bought 2 balls for ₹20 in all. Each ball cost the same. What did one ball cost? (a) ₹10 (b) ₹20 (c) ₹15 (d) not enough info
15. 15.🧩 Kabir bought 3 mangoes and a water bottle for ₹140 in all. Each mango cost the same. What did one mango cost? (a) ₹140 (b) ₹46 (c) not enough info (d) ₹137
16. 16.🧩 Ishaan bought 3 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹25 (c) not enough info (d) ₹20
17. 17.🧩 Arjun is 9 years old. Rohan is older than Arjun. How old is Rohan? (a) 14 (b) 11 (c) 10 (d) not enough info
18. 18.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
19. 19.🧩 A box has 6 rows of oranges, with 4 in each row. How many oranges are in the box? (a) not enough info (b) 28 (c) 24 (d) 10
20. 20.🧩 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
21. 21.🧩 Ishaan is 10 years old. Meera is older than Ishaan. How old is Meera? (a) 11 (b) 15 (c) not enough info (d) 12
22. 22.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
23. 23.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
24. 24.🧩 Ananya is 6 years old. Nisha is older than Ananya. How old is Nisha? (a) not enough info (b) 8 (c) 11 (d) 7
25. 25.🧩 Saanvi bought 3 notebooks and a bag for ₹145 in all. Each notebook cost the same. What did one notebook cost? (a) ₹145 (b) not enough info (c) ₹48 (d) ₹142
26. 26.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 5 PM
27. 27.🧩 Saanvi bought 3 mangoes for ₹45 in all. Each mango cost the same. What did one mango cost? (a) ₹15 (b) ₹20 (c) ₹45 (d) not enough info
28. 28.🧩 Saanvi bought 5 notebooks and a water bottle for ₹255 in all. Each notebook cost the same. What did one notebook cost? (a) ₹255 (b) ₹250 (c) ₹51 (d) not enough info
29. 29.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
30. 30.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 9 PM (d) 10 PM
31. 31.🧩 Ananya bought 4 kites for ₹220 in all. Each kite cost the same. What did one kite cost? (a) ₹55 (b) not enough info (c) ₹220 (d) ₹60
32. 32.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
33. 33.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
34. 34.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 4 PM
35. 35.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
36. 36.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
37. 37.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
38. 38.🧩 Ishaan bought 2 balls for ₹50 in all. Each ball cost the same. What did one ball cost? (a) ₹30 (b) ₹25 (c) ₹50 (d) not enough info
39. 39.🧩 Nisha is 10 years old. Rohan is older than Nisha. How old is Rohan? (a) 11 (b) 12 (c) not enough info (d) 15
40. 40.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 7 PM (c) not enough info (d) 8 PM

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