Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 533 · 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.🧩 Tara is 10 years old. Arjun is 9 years older than Tara. How old is Arjun? (a) 19 (b) 9 (c) not enough info (d) 20
2. 2.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
3. 3.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 8 (b) 40 (c) not enough info (d) 4
4. 4.🧩 Nisha is 10 years old. Saanvi is older than Nisha. How old is Saanvi? (a) 15 (b) 11 (c) 12 (d) not enough info
5. 5.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) 5 PM (d) not enough info
6. 6.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
7. 7.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) not enough info (c) 4 PM (d) 3 PM
8. 8.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 8 PM
9. 9.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
10. 10.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
11. 11.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
12. 12.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) dogs hate you (d) all dogs are mean
13. 13.🧩 A box has 8 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) not enough info (b) 12 (c) 32 (d) 36
14. 14.🧩 Nisha bought 3 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹55 (b) ₹50 (c) not enough info (d) ₹150
15. 15.🧩 Arjun is 8 years old. Meera is 2 years older than Arjun. How old is Meera? (a) 11 (b) not enough info (c) 10 (d) 2
16. 16.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
17. 17.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 4 PM
18. 18.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
19. 19.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 4 (b) not enough info (c) 40 (d) 8
20. 20.🧩 Kabir is 9 years old. Vihaan is 6 years older than Kabir. How old is Vihaan? (a) not enough info (b) 16 (c) 15 (d) 6
21. 21.🧩 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
22. 22.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
23. 23.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 10 (b) not enough info (c) 50 (d) 5
24. 24.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a rumour (d) a loud opinion
25. 25.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 8 (b) 4 (c) 40 (d) not enough info
26. 26.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 2 PM (c) 4 PM (d) not enough info
27. 27.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
28. 28.🧩 Rohan is 9 years old. Tara is 3 years older than Rohan. How old is Tara? (a) 13 (b) 12 (c) 3 (d) not enough info
29. 29.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) for fun only (d) to waste time
30. 30.🧩 Nisha bought 5 pens and a bag for ₹330 in all. Each pen cost the same. What did one pen cost? (a) ₹66 (b) ₹330 (c) ₹325 (d) not enough info
31. 31.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 8 (b) not enough info (c) 4 (d) 40
32. 32.🧩 Diya is 7 years old. Vihaan is 2 years older than Diya. How old is Vihaan? (a) 10 (b) not enough info (c) 2 (d) 9
33. 33.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) asking the whole class (d) guessing
34. 34.🧩 Rohan is 10 years old. Aarav is 5 years older than Rohan. How old is Aarav? (a) not enough info (b) 5 (c) 15 (d) 16
35. 35.🧩 A box has 3 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 10 (b) not enough info (c) 21 (d) 28
36. 36.🧩 Vihaan bought 4 pens and a bag for ₹130 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹130 (c) ₹126 (d) ₹32
37. 37.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) 5 PM (c) 6 PM (d) not enough info
38. 38.🧩 Diya is 12 years old. Aarav is 6 years older than Diya. How old is Aarav? (a) 18 (b) not enough info (c) 19 (d) 6
39. 39.🧩 A box has 8 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) not enough info (b) 64 (c) 72 (d) 16
40. 40.🧩 Aarav bought 2 mangoes for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹45 (b) ₹50 (c) not enough info (d) ₹90

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