Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 706 · 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: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
2. 2.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 6 PM
3. 3.🧩 A box has 4 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 35 (b) not enough info (c) 28 (d) 11
4. 4.🧩 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
5. 5.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 70 (b) 7 (c) not enough info (d) 14
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.🧩 Meera is 9 years old. Kabir is 8 years older than Meera. How old is Kabir? (a) not enough info (b) 18 (c) 17 (d) 8
8. 8.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) all dogs are mean (d) that one dog barked
9. 9.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a loud opinion (d) a rumour
10. 10.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
11. 11.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) not enough info (b) 4 (c) 8 (d) 40
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.🧩 Nisha bought 3 markers and a water bottle for ₹135 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹132 (c) ₹45 (d) ₹135
14. 14.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 4 PM (c) not enough info (d) 3 PM
15. 15.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
16. 16.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
17. 17.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
19. 19.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
20. 20.🧩 Arjun is 8 years old. Tara is older than Arjun. How old is Tara? (a) 10 (b) 13 (c) not enough info (d) 9
21. 21.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
22. 22.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 3 PM
23. 23.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
24. 24.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 4 PM (d) 5 PM
25. 25.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
26. 26.🧩 Ananya is 10 years old. Vihaan is 2 years older than Ananya. How old is Vihaan? (a) not enough info (b) 13 (c) 2 (d) 12
27. 27.🧩 Ananya bought 6 notebooks and a cap for ₹210 in all. Each notebook cost the same. What did one notebook cost? (a) ₹210 (b) not enough info (c) ₹204 (d) ₹35
28. 28.🧩 Diya bought 2 markers for ₹110 in all. Each marker cost the same. What did one marker cost? (a) ₹110 (b) ₹60 (c) ₹55 (d) not enough info
29. 29.🧩 Aarav bought 5 mangoes for ₹225 in all. Each mango cost the same. What did one mango cost? (a) ₹45 (b) not enough info (c) ₹50 (d) ₹225
30. 30.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to waste time (d) to change answers
31. 31.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
32. 32.🧩 Ananya is 7 years old. Vihaan is older than Ananya. How old is Vihaan? (a) 9 (b) not enough info (c) 12 (d) 8
33. 33.🧩 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
34. 34.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
35. 35.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 8 PM (c) not enough info (d) 7 PM
36. 36.🧩 A box has 4 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 35 (b) 28 (c) 11 (d) not enough info
37. 37.🧩 Meera bought 4 kites for ₹100 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) ₹25 (c) not enough info (d) ₹100
38. 38.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 6 PM
39. 39.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
40. 40.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 9 (b) 90 (c) not enough info (d) 18

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