Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 539 · 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.🧩 Rohan bought 4 mangoes for ₹160 in all. Each mango cost the same. What did one mango cost? (a) ₹45 (b) ₹40 (c) not enough info (d) ₹160
2. 2.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
4. 4.🥭 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, it is certain (d) yes, mangoes match
5. 5.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
6. 6.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 8 PM (c) not enough info (d) 7 PM
7. 7.🧩 Arjun is 7 years old. Diya is older than Arjun. How old is Diya? (a) 8 (b) 12 (c) 9 (d) not enough info
8. 8.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
9. 9.🐕 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
10. 10.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
11. 11.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
12. 12.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) not enough info (b) 50 (c) 10 (d) 5
13. 13.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
14. 14.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
15. 15.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 7 PM (c) not enough info (d) 8 PM
16. 16.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) 5 PM (d) not enough info
17. 17.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
18. 18.🧩 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
19. 19.🧩 Aarav bought 3 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) ₹65 (b) ₹180 (c) not enough info (d) ₹60
20. 20.🧩 Ishaan bought 2 balls and a water bottle for ₹100 in all. Each ball cost the same. What did one ball cost? (a) ₹50 (b) ₹98 (c) not enough info (d) ₹100
21. 21.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
22. 22.🧩 Kabir bought 2 markers for ₹50 in all. Each marker cost the same. What did one marker cost? (a) ₹30 (b) ₹50 (c) not enough info (d) ₹25
23. 23.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 6 PM
24. 24.🧩 A box has 6 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 42 (b) not enough info (c) 12 (d) 36
25. 25.🧩 Tara bought 4 notebooks and a lunch box for ₹210 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹52 (c) ₹206 (d) ₹210
26. 26.🧩 Tara is 10 years old. Ishaan is 3 years older than Tara. How old is Ishaan? (a) 14 (b) 13 (c) not enough info (d) 3
27. 27.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
28. 28.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
29. 29.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
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.🧩 Tara is 7 years old. Saanvi is older than Tara. How old is Saanvi? (a) 12 (b) not enough info (c) 8 (d) 9
32. 32.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
33. 33.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
34. 34.🧩 Nisha bought 4 pens for ₹240 in all. Each pen cost the same. What did one pen cost? (a) ₹240 (b) ₹65 (c) not enough info (d) ₹60
35. 35.🧩 Aarav bought 4 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹15 (c) ₹20 (d) ₹60
36. 36.🧩 A box has 6 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 28 (b) 24 (c) 10 (d) not enough info
37. 37.🧩 Saanvi bought 5 mangoes for ₹50 in all. Each mango cost the same. What did one mango cost? (a) ₹15 (b) ₹10 (c) not enough info (d) ₹50
38. 38.🧩 Aarav bought 2 markers for ₹120 in all. Each marker cost the same. What did one marker cost? (a) ₹65 (b) ₹120 (c) ₹60 (d) not enough info
39. 39.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
40. 40.🧩 Kabir bought 4 kites for ₹160 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) not enough info (c) ₹40 (d) ₹160

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