Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 738 · 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.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
2. 2.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) guessing (d) asking one friend
3. 3.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) 9 PM (c) not enough info (d) 6 PM
4. 4.🧩 A box has 8 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 63 (b) not enough info (c) 56 (d) 15
5. 5.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
7. 7.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
8. 8.🧩 Vihaan is 10 years old. Arjun is older than Vihaan. How old is Arjun? (a) 12 (b) not enough info (c) 15 (d) 11
9. 9.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) dogs hate you (d) all dogs are mean
10. 10.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
11. 11.🧩 Aarav bought 4 balls for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) not enough info (c) ₹180 (d) ₹50
12. 12.🧩 A box has 6 rows of eggs, with 5 in each row. How many eggs are in the box? (a) not enough info (b) 11 (c) 35 (d) 30
13. 13.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a guess (d) a loud opinion
14. 14.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) 5 PM (c) 4 PM (d) not enough info
15. 15.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
17. 17.🧩 Saanvi is 9 years old. Ananya is 8 years older than Saanvi. How old is Ananya? (a) not enough info (b) 17 (c) 8 (d) 18
18. 18.🧩 Rohan is 6 years old. Arjun is 5 years older than Rohan. How old is Arjun? (a) 12 (b) 5 (c) 11 (d) not enough info
19. 19.🧩 Kabir bought 4 pens for ₹180 in all. Each pen cost the same. What did one pen cost? (a) ₹180 (b) not enough info (c) ₹45 (d) ₹50
20. 20.🥭 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
21. 21.🧩 Tara is 12 years old. Nisha is older than Tara. How old is Nisha? (a) not enough info (b) 17 (c) 13 (d) 14
22. 22.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
23. 23.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 8 PM
24. 24.🧩 Nisha bought 5 mangoes for ₹75 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) ₹75 (c) ₹15 (d) not enough info
25. 25.🧩 Vihaan bought 5 mangoes for ₹50 in all. Each mango cost the same. What did one mango cost? (a) ₹50 (b) ₹15 (c) ₹10 (d) not enough info
26. 26.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) not enough info (b) 60 (c) 12 (d) 6
27. 27.🧩 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
28. 28.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
29. 29.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
30. 30.🧩 A box has 3 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 16 (c) 12 (d) 7
31. 31.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
32. 32.🧩 Ananya is 9 years old. Vihaan is older than Ananya. How old is Vihaan? (a) 11 (b) not enough info (c) 10 (d) 14
33. 33.🧩 Ananya is 9 years old. Ishaan is older than Ananya. How old is Ishaan? (a) 14 (b) 10 (c) 11 (d) not enough info
34. 34.🧩 Aarav is 8 years old. Saanvi is 5 years older than Aarav. How old is Saanvi? (a) 13 (b) 14 (c) not enough info (d) 5
35. 35.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
36. 36.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 4 PM
37. 37.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
38. 38.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) for fun only (d) to be sure of results
39. 39.🧩 A box has 3 rows of apples, with 4 in each row. How many apples are in the box? (a) 7 (b) 12 (c) 16 (d) not enough info
40. 40.🧩 Rohan bought 2 markers for ₹100 in all. Each marker cost the same. What did one marker cost? (a) ₹55 (b) ₹50 (c) not enough info (d) ₹100

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