Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 822 · 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.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Aarav is 7 years old. Diya is older than Aarav. How old is Diya? (a) not enough info (b) 12 (c) 8 (d) 9
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
4. 4.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 6 PM (c) 7 PM (d) not enough info
5. 5.🧩 Ananya is 11 years old. Vihaan is older than Ananya. How old is Vihaan? (a) 16 (b) 12 (c) not enough info (d) 13
6. 6.🧩 Kabir bought 6 markers for ₹300 in all. Each marker cost the same. What did one marker cost? (a) ₹300 (b) not enough info (c) ₹50 (d) ₹55
7. 7.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 6 PM
8. 8.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
9. 9.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to waste time (d) to be sure of results
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.🧩 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.🧩 A box has 4 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 13 (b) not enough info (c) 45 (d) 36
13. 13.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) that one dog barked (d) never see dogs
14. 14.🧩 A box has 4 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) not enough info (b) 25 (c) 9 (d) 20
15. 15.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
16. 16.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking one friend (d) asking your pet
17. 17.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
18. 18.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a guess (d) a loud opinion
19. 19.🧩 Saanvi bought 5 markers and a water bottle for ₹265 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹265 (c) ₹260 (d) ₹53
20. 20.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
21. 21.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 2 PM
22. 22.🧩 A box has 7 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 13 (b) 48 (c) not enough info (d) 42
23. 23.🧩 Meera is 6 years old. Arjun is 6 years older than Meera. How old is Arjun? (a) 6 (b) 13 (c) not enough info (d) 12
24. 24.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
25. 25.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 7 PM
26. 26.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 40 (b) not enough info (c) 4 (d) 8
27. 27.🧩 A box has 7 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 11 (b) 32 (c) not enough info (d) 28
28. 28.🧩 Diya is 7 years old. Tara is 8 years older than Diya. How old is Tara? (a) 8 (b) 15 (c) not enough info (d) 16
29. 29.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
30. 30.🧩 Arjun bought 2 kites for ₹110 in all. Each kite cost the same. What did one kite cost? (a) ₹110 (b) ₹60 (c) not enough info (d) ₹55
31. 31.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
32. 32.🧩 Kabir bought 3 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹60 (c) ₹20 (d) ₹25
33. 33.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 7 PM
34. 34.🧩 A box has 5 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 42 (b) 12 (c) not enough info (d) 35
35. 35.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
36. 36.🧩 Kabir bought 5 mangoes and a lunch box for ₹140 in all. Each mango cost the same. What did one mango cost? (a) ₹140 (b) not enough info (c) ₹135 (d) ₹28
37. 37.🧩 Aarav bought 4 balls for ₹200 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹55 (c) ₹200 (d) ₹50
38. 38.🧩 Vihaan bought 4 markers for ₹180 in all. Each marker cost the same. What did one marker cost? (a) ₹50 (b) ₹180 (c) not enough info (d) ₹45
39. 39.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
40. 40.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 6 (b) 60 (c) not enough info (d) 12

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