Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 510 · 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.🧩 Aarav is 10 years old. Nisha is older than Aarav. How old is Nisha? (a) not enough info (b) 11 (c) 12 (d) 15
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.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking the whole class (d) asking one friend
4. 4.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) not enough info (c) 4 PM (d) 3 PM
5. 5.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
6. 6.🧩 Meera bought 2 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) ₹30 (c) not enough info (d) ₹35
7. 7.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 6 PM
8. 8.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
9. 9.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
10. 10.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
11. 11.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
12. 12.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 3 PM
13. 13.🧩 A box has 4 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 30 (b) 24 (c) 10 (d) not enough info
14. 14.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
15. 15.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, mangoes match (c) no mango is sweet (d) yes, it is certain
16. 16.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) dogs hate you (d) that one dog barked
17. 17.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
18. 18.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
19. 19.🧩 Ananya is 12 years old. Tara is 4 years older than Ananya. How old is Tara? (a) not enough info (b) 4 (c) 16 (d) 17
20. 20.🧩 Meera bought 5 markers for ₹200 in all. Each marker cost the same. What did one marker cost? (a) ₹40 (b) ₹200 (c) not enough info (d) ₹45
21. 21.🧩 A box has 5 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 10 (b) not enough info (c) 30 (d) 25
22. 22.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
23. 23.🧩 A box has 3 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 27 (b) 12 (c) 36 (d) not enough info
24. 24.🧩 Kabir is 10 years old. Diya is 7 years older than Kabir. How old is Diya? (a) 7 (b) not enough info (c) 17 (d) 18
25. 25.🧩 Saanvi is 10 years old. Arjun is 4 years older than Saanvi. How old is Arjun? (a) 4 (b) 14 (c) 15 (d) not enough info
26. 26.🧩 Rohan bought 6 mangoes and a cap for ₹230 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹230 (c) ₹38 (d) ₹224
27. 27.🧩 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
28. 28.🧩 Arjun bought 2 pens for ₹40 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) ₹20 (c) not enough info (d) ₹25
29. 29.🧩 Meera bought 3 notebooks for ₹135 in all. Each notebook cost the same. What did one notebook cost? (a) ₹135 (b) ₹45 (c) ₹50 (d) not enough info
30. 30.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
31. 31.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) to be sure of results (d) for fun only
32. 32.🧩 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
33. 33.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
34. 34.🧩 Aarav is 11 years old. Tara is 9 years older than Aarav. How old is Tara? (a) 20 (b) 21 (c) 9 (d) not enough info
35. 35.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
36. 36.🧩 Ishaan bought 5 kites and a water bottle for ₹165 in all. Each kite cost the same. What did one kite cost? (a) ₹160 (b) ₹165 (c) not enough info (d) ₹33
37. 37.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
38. 38.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
39. 39.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
40. 40.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False

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