Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 179 · 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 5 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 7 PM (d) 8 PM
2. 2.🧩 Saanvi bought 4 kites and a bag for ₹100 in all. Each kite cost the same. What did one kite cost? (a) ₹96 (b) ₹25 (c) ₹100 (d) not enough info
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.🧩 Tara bought 2 kites and a cap for ₹110 in all. Each kite cost the same. What did one kite cost? (a) ₹108 (b) ₹110 (c) ₹55 (d) not enough info
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
6. 6.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 9 PM (c) not enough info (d) 7 PM
7. 7.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
8. 8.🧩 Rohan bought 3 balls and a water bottle for ₹125 in all. Each ball cost the same. What did one ball cost? (a) ₹125 (b) not enough info (c) ₹122 (d) ₹41
9. 9.🧩 Saanvi is 8 years old. Nisha is older than Saanvi. How old is Nisha? (a) 9 (b) 10 (c) not enough info (d) 13
10. 10.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
11. 11.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
12. 12.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 9 PM (c) not enough info (d) 8 PM
13. 13.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
14. 14.🧩 Ananya bought 5 kites for ₹275 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹275 (c) ₹60 (d) ₹55
15. 15.🧩 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
16. 16.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
17. 17.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) for fun only (d) to waste time
18. 18.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
19. 19.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
20. 20.🧩 A box has 5 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 12 (b) not enough info (c) 42 (d) 35
21. 21.🧩 Aarav bought 3 pens and a bag for ₹130 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹127 (c) ₹130 (d) ₹43
22. 22.🧩 Diya is 11 years old. Aarav is older than Diya. How old is Aarav? (a) 13 (b) 16 (c) 12 (d) not enough info
23. 23.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 90 (b) 18 (c) 9 (d) not enough info
24. 24.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 4 PM (d) 8 PM
25. 25.🧩 Tara is 10 years old. Ananya is older than Tara. How old is Ananya? (a) not enough info (b) 12 (c) 15 (d) 11
26. 26.🧩 Aarav bought 5 pens and a bag for ₹205 in all. Each pen cost the same. What did one pen cost? (a) ₹200 (b) ₹205 (c) ₹41 (d) not enough info
27. 27.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 3 PM
28. 28.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
29. 29.🧩 Diya bought 4 balls and a cap for ₹210 in all. Each ball cost the same. What did one ball cost? (a) ₹206 (b) ₹52 (c) ₹210 (d) not enough info
30. 30.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
31. 31.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
32. 32.🧩 Meera is 9 years old. Arjun is 7 years older than Meera. How old is Arjun? (a) 17 (b) not enough info (c) 7 (d) 16
33. 33.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 4 (b) 8 (c) 40 (d) not enough info
34. 34.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 8 (b) 16 (c) 80 (d) not enough info
35. 35.🧩 Nisha bought 4 markers and a bag for ₹310 in all. Each marker cost the same. What did one marker cost? (a) ₹310 (b) ₹77 (c) ₹306 (d) not enough info
36. 36.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
37. 37.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
38. 38.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
39. 39.🧩 Aarav is 12 years old. Arjun is older than Aarav. How old is Arjun? (a) 14 (b) 13 (c) 17 (d) not enough info
40. 40.🧩 Vihaan is 11 years old. Kabir is older than Vihaan. How old is Kabir? (a) 16 (b) 12 (c) 13 (d) not enough info

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