Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 973 · 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.🧩 Ishaan bought 5 kites and a water bottle for ₹205 in all. Each kite cost the same. What did one kite cost? (a) ₹41 (b) ₹200 (c) ₹205 (d) not enough info
2. 2.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
3. 3.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 4 PM (c) 6 PM (d) not enough info
4. 4.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
5. 5.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 4 PM
6. 6.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
7. 7.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
8. 8.🧩 Ishaan is 10 years old. Ananya is older than Ishaan. How old is Ananya? (a) not enough info (b) 11 (c) 15 (d) 12
9. 9.🧩 Meera bought 4 balls and a bag for ₹100 in all. Each ball cost the same. What did one ball cost? (a) ₹96 (b) ₹25 (c) ₹100 (d) not enough info
10. 10.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
11. 11.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 3 PM
12. 12.🧩 Ishaan bought 2 notebooks for ₹80 in all. Each notebook cost the same. What did one notebook cost? (a) ₹80 (b) ₹40 (c) ₹45 (d) not enough info
13. 13.📊 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
14. 14.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 8 PM (d) 7 PM
15. 15.🧩 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
16. 16.🥭 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, it is certain (c) no, check more (d) yes, mangoes match
17. 17.🧩 Kabir bought 2 markers for ₹40 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹40 (c) ₹25 (d) ₹20
18. 18.🧩 Rohan is 10 years old. Aarav is 3 years older than Rohan. How old is Aarav? (a) 13 (b) 14 (c) not enough info (d) 3
19. 19.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
20. 20.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
21. 21.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) never see dogs (d) all dogs are mean
22. 22.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
23. 23.🧩 A box has 8 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 36 (b) not enough info (c) 32 (d) 12
24. 24.🧩 Ananya is 11 years old. Ishaan is older than Ananya. How old is Ishaan? (a) 12 (b) 13 (c) not enough info (d) 16
25. 25.🧩 Vihaan is 9 years old. Meera is older than Vihaan. How old is Meera? (a) 10 (b) 14 (c) 11 (d) not enough info
26. 26.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
27. 27.🧩 A box has 7 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 28 (c) 32 (d) 11
28. 28.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
29. 29.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
30. 30.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
31. 31.🧩 Meera is 8 years old. Diya is older than Meera. How old is Diya? (a) 13 (b) 10 (c) 9 (d) not enough info
32. 32.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 9 PM
33. 33.🧩 Kabir is 9 years old. Vihaan is older than Kabir. How old is Vihaan? (a) 11 (b) not enough info (c) 10 (d) 14
34. 34.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 2 PM (d) 5 PM
35. 35.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
36. 36.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
37. 37.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
38. 38.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 7 PM (c) 8 PM (d) 5 PM
39. 39.🧩 Rohan bought 4 markers and a lunch box for ₹160 in all. Each marker cost the same. What did one marker cost? (a) ₹156 (b) ₹160 (c) ₹40 (d) not enough info
40. 40.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True

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