Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 358 · 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.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to change answers (d) to waste time
2. 2.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
3. 3.🧩 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
4. 4.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 2 PM
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
7. 7.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 3 PM (d) not enough info
8. 8.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
9. 9.🧩 Ananya is 6 years old. Aarav is 6 years older than Ananya. How old is Aarav? (a) 13 (b) not enough info (c) 12 (d) 6
10. 10.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
11. 11.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 7 PM (d) not enough info
12. 12.🧩 Meera bought 6 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹15 (b) not enough info (c) ₹60 (d) ₹10
13. 13.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
14. 14.🧩 Before solving a word problem, first check… (a) your handwriting (b) what facts are given (c) the colour of ink (d) the page number
15. 15.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 7 PM (c) 8 PM (d) 6 PM
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.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
18. 18.🧩 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
19. 19.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 8 PM (c) not enough info (d) 7 PM
20. 20.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
21. 21.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) never see dogs (d) that one dog barked
22. 22.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
23. 23.🥭 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 mango is sweet (d) no, check more
24. 24.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) facts that support it (d) a guess
25. 25.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 70 (b) 14 (c) not enough info (d) 7
26. 26.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
27. 27.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 4 PM (c) 5 PM (d) not enough info
28. 28.🧩 Saanvi bought 3 mangoes for ₹45 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹20 (c) ₹45 (d) ₹15
29. 29.🧩 A box has 8 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 32 (b) not enough info (c) 12 (d) 36
30. 30.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 6 (b) 60 (c) not enough info (d) 12
31. 31.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
32. 32.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
33. 33.🧩 Kabir is 11 years old. Arjun is 2 years older than Kabir. How old is Arjun? (a) 2 (b) 13 (c) 14 (d) not enough info
34. 34.🧩 A box has 8 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 14 (b) 48 (c) not enough info (d) 54
35. 35.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
36. 36.🧩 Nisha is 7 years old. Diya is 9 years older than Nisha. How old is Diya? (a) 17 (b) not enough info (c) 9 (d) 16
37. 37.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
38. 38.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
39. 39.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
40. 40.🧩 Saanvi bought 5 kites and a water bottle for ₹145 in all. Each kite cost the same. What did one kite cost? (a) ₹140 (b) ₹29 (c) ₹145 (d) not enough info

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