Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 232 · 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.🧩 A box has 8 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 64 (b) 16 (c) not enough info (d) 72
2. 2.🧩 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
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
4. 4.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
5. 5.🧩 A box has 5 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 25 (b) 30 (c) not enough info (d) 10
6. 6.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
7. 7.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
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) no, check more (c) yes, mangoes match (d) yes, it is certain
9. 9.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) not enough info (d) 5 PM
10. 10.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
11. 11.🧩 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
12. 12.🧩 A box has 4 rows of guavas, with 6 in each row. How many guavas are in the box? (a) not enough info (b) 24 (c) 30 (d) 10
13. 13.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 2 PM (c) 3 PM (d) not enough info
14. 14.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
15. 15.🧩 A box has 6 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 42 (b) 12 (c) 36 (d) not enough info
16. 16.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
17. 17.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
18. 18.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
19. 19.🧩 Saanvi bought 4 notebooks for ₹200 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) not enough info (c) ₹200 (d) ₹55
20. 20.🧩 Ishaan bought 6 balls for ₹150 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹30 (c) ₹150 (d) ₹25
21. 21.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) for fun only (d) to waste time
22. 22.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Rohan bought 6 notebooks and a water bottle for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹174 (b) ₹180 (c) ₹30 (d) not enough info
24. 24.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
25. 25.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
26. 26.🧩 Nisha bought 4 kites for ₹160 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) ₹40 (c) not enough info (d) ₹160
27. 27.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
28. 28.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 18 (b) not enough info (c) 9 (d) 90
29. 29.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
30. 30.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
31. 31.🧩 Arjun bought 2 markers for ₹50 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹30 (c) ₹25 (d) ₹50
32. 32.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) facts that support it (d) a loud opinion
33. 33.🧩 Saanvi bought 6 pens for ₹300 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹55 (c) ₹300 (d) not enough info
34. 34.🧩 Rohan is 11 years old. Aarav is older than Rohan. How old is Aarav? (a) 12 (b) 13 (c) 16 (d) not enough info
35. 35.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
36. 36.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
37. 37.🧩 Kabir bought 3 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹25 (d) ₹20
38. 38.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
39. 39.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) not enough info (b) 40 (c) 8 (d) 4
40. 40.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) 6 PM (d) not enough info

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