Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 775 · 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? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
2. 2.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 4 PM
3. 3.🧩 Nisha is 9 years old. Saanvi is older than Nisha. How old is Saanvi? (a) not enough info (b) 11 (c) 10 (d) 14
4. 4.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
5. 5.🧩 Tara is 12 years old. Ananya is 3 years older than Tara. How old is Ananya? (a) not enough info (b) 15 (c) 3 (d) 16
6. 6.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
7. 7.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
8. 8.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
9. 9.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
10. 10.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 5 (b) 10 (c) not enough info (d) 50
11. 11.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) asking one friend (d) guessing
12. 12.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
13. 13.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
14. 14.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
15. 15.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 12 (b) 6 (c) 60 (d) not enough info
16. 16.🧩 Ananya is 11 years old. Diya is older than Ananya. How old is Diya? (a) 12 (b) 13 (c) 16 (d) not enough info
17. 17.🧩 Tara bought 3 notebooks and a cap for ₹245 in all. Each notebook cost the same. What did one notebook cost? (a) ₹242 (b) ₹245 (c) ₹81 (d) not enough info
18. 18.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
19. 19.🧩 Kabir bought 2 mangoes and a cap for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹88 (b) ₹90 (c) ₹45 (d) not enough info
20. 20.🧩 Aarav bought 4 notebooks for ₹200 in all. Each notebook cost the same. What did one notebook cost? (a) ₹200 (b) not enough info (c) ₹50 (d) ₹55
21. 21.🧩 Aarav is 8 years old. Nisha is 2 years older than Aarav. How old is Nisha? (a) 11 (b) 2 (c) 10 (d) not enough info
22. 22.🐕 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
23. 23.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no mango is sweet (c) yes, it is certain (d) no, check more
24. 24.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
25. 25.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
26. 26.🧩 Aarav bought 5 markers for ₹50 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹50 (c) ₹15 (d) ₹10
27. 27.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
28. 28.🧩 Ishaan is 12 years old. Diya is 7 years older than Ishaan. How old is Diya? (a) 7 (b) not enough info (c) 19 (d) 20
29. 29.🧩 A box has 8 rows of oranges, with 7 in each row. How many oranges are in the box? (a) 63 (b) 15 (c) 56 (d) not enough info
30. 30.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
31. 31.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) facts that support it (d) a guess
32. 32.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 5 PM (b) not enough info (c) 8 PM (d) 9 PM
33. 33.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
34. 34.🧩 A box has 5 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 13 (b) 40 (c) 48 (d) not enough info
35. 35.🧩 Meera bought 2 balls for ₹20 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹20 (c) ₹10 (d) ₹15
36. 36.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
37. 37.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
38. 38.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
39. 39.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
40. 40.🧩 Tara bought 5 pens for ₹50 in all. Each pen cost the same. What did one pen cost? (a) ₹10 (b) not enough info (c) ₹50 (d) ₹15

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