Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 238 · 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.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a rumour (d) a loud opinion
2. 2.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
3. 3.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
4. 4.🧩 Saanvi bought 2 mangoes for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹90 (b) ₹50 (c) not enough info (d) ₹45
5. 5.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 5 PM
6. 6.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) 5 PM (d) not enough info
7. 7.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
8. 8.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
9. 9.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
10. 10.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
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.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 8 PM (d) 7 PM
13. 13.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
14. 14.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
15. 15.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
16. 16.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
17. 17.🧩 A box has 8 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 45 (b) 13 (c) 40 (d) not enough info
18. 18.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
19. 19.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
20. 20.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) all dogs are mean (d) dogs hate you
21. 21.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) not enough info (c) 4 PM (d) 5 PM
22. 22.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
23. 23.🧩 Arjun is 12 years old. Rohan is 2 years older than Arjun. How old is Rohan? (a) 14 (b) 15 (c) 2 (d) not enough info
24. 24.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 10 (b) 50 (c) not enough info (d) 5
25. 25.🧩 A box has 6 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 56 (b) 48 (c) 14 (d) not enough info
26. 26.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 7 PM (c) 8 PM (d) not enough info
27. 27.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 6 PM (c) 3 PM (d) not enough info
28. 28.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
29. 29.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to change answers (d) to be sure of results
30. 30.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 4 (b) 8 (c) 40 (d) not enough info
31. 31.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking the whole class (d) asking one friend
32. 32.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 7 PM (c) 5 PM (d) 6 PM
33. 33.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 8 PM (c) not enough info (d) 5 PM
34. 34.🧩 Meera is 8 years old. Kabir is older than Meera. How old is Kabir? (a) 9 (b) 10 (c) 13 (d) not enough info
35. 35.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 10 (b) 5 (c) not enough info (d) 50
36. 36.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) not enough info (b) 14 (c) 70 (d) 7
37. 37.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
38. 38.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 8 (b) 16 (c) not enough info (d) 80
39. 39.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
40. 40.🧩 A box has 3 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 24 (b) 11 (c) 32 (d) not enough info

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