Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 723 · 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 2 PM. It is a long film. When does it end? (a) 4 PM (b) 3 PM (c) 5 PM (d) not enough info
2. 2.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
3. 3.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) 5 PM (c) 6 PM (d) not enough info
4. 4.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a rumour (d) a guess
5. 5.🧩 A box has 8 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 81 (b) 17 (c) not enough info (d) 72
6. 6.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
7. 7.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) not enough info (b) 8 (c) 16 (d) 80
8. 8.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
9. 9.🧩 Ananya bought 6 markers and a cap for ₹190 in all. Each marker cost the same. What did one marker cost? (a) ₹31 (b) not enough info (c) ₹184 (d) ₹190
10. 10.🧩 Tara bought 6 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) not enough info (c) ₹15 (d) ₹10
11. 11.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
12. 12.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
13. 13.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
14. 14.🧩 Aarav bought 5 mangoes and a cap for ₹225 in all. Each mango cost the same. What did one mango cost? (a) ₹225 (b) ₹45 (c) ₹220 (d) not enough info
15. 15.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
16. 16.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
17. 17.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
18. 18.🧩 Nisha bought 6 markers and a water bottle for ₹320 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹53 (c) ₹320 (d) ₹314
19. 19.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) that one dog barked (d) all dogs are mean
20. 20.🧩 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
21. 21.🧩 A box has 6 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 30 (b) 11 (c) not enough info (d) 35
22. 22.🧩 Meera bought 3 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) not enough info (c) ₹20 (d) ₹25
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) no, check more (c) no mango is sweet (d) yes, mangoes match
24. 24.🧩 Ananya is 12 years old. Saanvi is older than Ananya. How old is Saanvi? (a) 17 (b) 13 (c) not enough info (d) 14
25. 25.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
26. 26.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 70 (b) 7 (c) not enough info (d) 14
27. 27.🧩 A box has 5 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 40 (b) 13 (c) 48 (d) not enough info
28. 28.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
29. 29.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
30. 30.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
31. 31.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
32. 32.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
33. 33.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 8 PM (c) 7 PM (d) not enough info
34. 34.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 7 PM
35. 35.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
36. 36.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
37. 37.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 9 PM (c) 10 PM (d) not enough info
38. 38.🧩 Rohan bought 4 mangoes and a cap for ₹290 in all. Each mango cost the same. What did one mango cost? (a) ₹72 (b) ₹290 (c) ₹286 (d) not enough info
39. 39.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
40. 40.🧩 Ishaan bought 4 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹15 (b) ₹20 (c) not enough info (d) ₹60

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