Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 243 · 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.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 4 PM
2. 2.🥭 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
3. 3.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
4. 4.🧩 Saanvi bought 6 balls and a cap for ₹300 in all. Each ball cost the same. What did one ball cost? (a) ₹50 (b) ₹294 (c) ₹300 (d) not enough info
5. 5.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
6. 6.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) 6 PM (c) 7 PM (d) not enough info
7. 7.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
8. 8.🧩 A box has 5 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 25 (b) 10 (c) not enough info (d) 30
9. 9.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
10. 10.🧩 Aarav bought 3 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹45 (b) ₹120 (c) not enough info (d) ₹40
11. 11.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
12. 12.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 5 PM (d) 6 PM
13. 13.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 6 PM (c) 5 PM (d) not enough info
14. 14.🧩 A box has 5 rows of apples, with 9 in each row. How many apples are in the box? (a) 54 (b) not enough info (c) 45 (d) 14
15. 15.🧩 Meera is 9 years old. Rohan is 2 years older than Meera. How old is Rohan? (a) 12 (b) not enough info (c) 11 (d) 2
16. 16.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
17. 17.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
18. 18.🧩 Kabir bought 2 kites for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) not enough info (c) ₹65 (d) ₹120
19. 19.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to be sure of results (d) to waste time
20. 20.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
21. 21.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 6 PM (c) 2 PM (d) not enough info
22. 22.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Tara is 6 years old. Aarav is 3 years older than Tara. How old is Aarav? (a) not enough info (b) 9 (c) 3 (d) 10
24. 24.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 7 (b) 14 (c) 70 (d) not enough info
25. 25.🧩 Nisha is 10 years old. Meera is older than Nisha. How old is Meera? (a) not enough info (b) 11 (c) 15 (d) 12
26. 26.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 4 PM
27. 27.🧩 Tara is 12 years old. Arjun is older than Tara. How old is Arjun? (a) 13 (b) 14 (c) 17 (d) not enough info
28. 28.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 60 (b) 12 (c) not enough info (d) 6
29. 29.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking your pet (d) asking one friend
30. 30.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
31. 31.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) 5 PM (c) not enough info (d) 6 PM
32. 32.🐕 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
33. 33.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 9 PM
34. 34.🧩 Vihaan bought 4 notebooks for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) ₹10 (b) ₹40 (c) not enough info (d) ₹15
35. 35.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 7 PM
36. 36.🧩 Saanvi bought 6 notebooks for ₹240 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹45 (c) ₹240 (d) ₹40
37. 37.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
38. 38.🧩 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
39. 39.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
40. 40.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence

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