Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 592 · 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.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) all dogs are mean (d) that one dog barked
2. 2.🧩 A box has 8 rows of apples, with 8 in each row. How many apples are in the box? (a) 72 (b) 64 (c) 16 (d) not enough info
3. 3.🧩 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
4. 4.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) to waste time (d) for fun only
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
6. 6.🧩 Rohan is 7 years old. Kabir is 5 years older than Rohan. How old is Kabir? (a) 5 (b) 13 (c) 12 (d) not enough info
7. 7.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 8 PM
8. 8.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
9. 9.🧩 A box has 7 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 35 (b) not enough info (c) 12 (d) 40
10. 10.🥭 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) no, check more (c) yes, mangoes match (d) yes, it is certain
11. 11.🧩 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
12. 12.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
13. 13.🧩 Diya is 6 years old. Rohan is older than Diya. How old is Rohan? (a) 11 (b) 8 (c) not enough info (d) 7
14. 14.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
15. 15.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
16. 16.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 80 (b) not enough info (c) 16 (d) 8
17. 17.🧩 Meera is 9 years old. Rohan is 4 years older than Meera. How old is Rohan? (a) 13 (b) 14 (c) not enough info (d) 4
18. 18.🧩 Kabir bought 5 notebooks for ₹300 in all. Each notebook cost the same. What did one notebook cost? (a) ₹300 (b) ₹60 (c) not enough info (d) ₹65
19. 19.🧩 A box has 7 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 32 (b) 28 (c) not enough info (d) 11
20. 20.🧩 Aarav is 7 years old. Saanvi is older than Aarav. How old is Saanvi? (a) 12 (b) not enough info (c) 8 (d) 9
21. 21.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
22. 22.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 70 (b) not enough info (c) 14 (d) 7
23. 23.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
24. 24.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
25. 25.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
27. 27.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
28. 28.🧩 A box has 3 rows of apples, with 5 in each row. How many apples are in the box? (a) 20 (b) not enough info (c) 15 (d) 8
29. 29.🧩 Diya bought 4 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) ₹30 (c) not enough info (d) ₹120
30. 30.🧩 Kabir bought 2 mangoes and a bag for ₹60 in all. Each mango cost the same. What did one mango cost? (a) ₹58 (b) ₹30 (c) ₹60 (d) not enough info
31. 31.🧩 Rohan is 9 years old. Kabir is 7 years older than Rohan. How old is Kabir? (a) 17 (b) 16 (c) 7 (d) not enough info
32. 32.🧩 Ishaan is 10 years old. Meera is 5 years older than Ishaan. How old is Meera? (a) 16 (b) 15 (c) not enough info (d) 5
33. 33.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 4 PM (c) not enough info (d) 8 PM
34. 34.🧩 Nisha bought 3 notebooks for ₹135 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) ₹135 (c) not enough info (d) ₹45
35. 35.🧩 Kabir bought 6 kites and a lunch box for ₹220 in all. Each kite cost the same. What did one kite cost? (a) ₹214 (b) ₹220 (c) ₹36 (d) not enough info
36. 36.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
37. 37.🧩 Saanvi is 7 years old. Aarav is older than Saanvi. How old is Aarav? (a) 8 (b) 9 (c) 12 (d) not enough info
38. 38.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 2 PM (c) not enough info (d) 5 PM
39. 39.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 3 PM (c) 5 PM (d) 4 PM
40. 40.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 5 PM

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