Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 763 · 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) False (b) True
2. 2.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
3. 3.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
4. 4.🧩 A box has 3 rows of apples, with 8 in each row. How many apples are in the box? (a) 11 (b) not enough info (c) 32 (d) 24
5. 5.🧩 Nisha is 7 years old. Diya is older than Nisha. How old is Diya? (a) 8 (b) 9 (c) not enough info (d) 12
6. 6.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 7 PM
7. 7.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
8. 8.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
9. 9.🧩 A box has 7 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) not enough info (b) 64 (c) 56 (d) 15
10. 10.🧩 Aarav bought 2 mangoes for ₹110 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹60 (c) ₹55 (d) ₹110
11. 11.🧩 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
12. 12.🧩 A box has 4 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 8 (c) 16 (d) 20
13. 13.🥭 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) yes, mangoes match (c) yes, it is certain (d) no, check more
14. 14.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
15. 15.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Nisha is 9 years old. Kabir is older than Nisha. How old is Kabir? (a) not enough info (b) 14 (c) 11 (d) 10
17. 17.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 3 PM (d) 5 PM
18. 18.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
19. 19.🧩 Meera bought 6 kites for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹35 (b) ₹180 (c) not enough info (d) ₹30
20. 20.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
21. 21.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
22. 22.🧩 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
23. 23.🧩 Kabir bought 2 balls for ₹30 in all. Each ball cost the same. What did one ball cost? (a) ₹15 (b) not enough info (c) ₹30 (d) ₹20
24. 24.🧩 Tara bought 5 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) ₹35 (c) not enough info (d) ₹150
25. 25.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
26. 26.🧩 A box has 8 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 17 (b) 81 (c) not enough info (d) 72
27. 27.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 3 PM
28. 28.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) not enough info (b) 16 (c) 80 (d) 8
29. 29.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 70 (b) 7 (c) not enough info (d) 14
30. 30.🧩 Aarav is 8 years old. Kabir is older than Aarav. How old is Kabir? (a) 13 (b) 9 (c) 10 (d) not enough info
31. 31.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
32. 32.🧩 Kabir bought 3 pens for ₹105 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) not enough info (c) ₹105 (d) ₹35
33. 33.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
34. 34.🧩 A box has 3 rows of eggs, with 5 in each row. How many eggs are in the box? (a) not enough info (b) 8 (c) 15 (d) 20
35. 35.🧩 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
36. 36.🧩 Aarav bought 2 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹30 (c) not enough info (d) ₹35
37. 37.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
38. 38.🧩 Kabir is 12 years old. Nisha is older than Kabir. How old is Nisha? (a) 14 (b) 17 (c) not enough info (d) 13
39. 39.🐕 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
40. 40.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True

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