Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 902 · 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.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
2. 2.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
3. 3.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 3 PM
4. 4.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 7 PM
5. 5.🧩 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
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.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 8 (b) 4 (c) not enough info (d) 40
8. 8.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
9. 9.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no mango is sweet (d) no, check more
10. 10.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) facts that support it (d) a guess
11. 11.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) asking one friend (d) guessing
12. 12.🧩 Aarav bought 3 pens and a bag for ₹75 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) not enough info (c) ₹72 (d) ₹75
13. 13.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 7 (b) 14 (c) 70 (d) not enough info
14. 14.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to change answers (d) to be sure of results
15. 15.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Saanvi bought 4 kites and a cap for ₹170 in all. Each kite cost the same. What did one kite cost? (a) ₹42 (b) ₹166 (c) not enough info (d) ₹170
17. 17.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
18. 18.🧩 Ananya is 7 years old. Saanvi is older than Ananya. How old is Saanvi? (a) 8 (b) not enough info (c) 9 (d) 12
19. 19.🧩 Ishaan bought 6 balls and a water bottle for ₹280 in all. Each ball cost the same. What did one ball cost? (a) ₹274 (b) ₹46 (c) ₹280 (d) not enough info
20. 20.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
21. 21.🧩 Ishaan is 7 years old. Arjun is 5 years older than Ishaan. How old is Arjun? (a) 5 (b) 13 (c) 12 (d) not enough info
22. 22.🧩 Diya bought 5 pens for ₹300 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹300 (c) ₹65 (d) ₹60
23. 23.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
24. 24.🧩 Kabir bought 6 pens and a bag for ₹290 in all. Each pen cost the same. What did one pen cost? (a) ₹284 (b) not enough info (c) ₹48 (d) ₹290
25. 25.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
26. 26.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
27. 27.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
28. 28.🧩 Kabir is 6 years old. Tara is older than Kabir. How old is Tara? (a) 11 (b) 8 (c) not enough info (d) 7
29. 29.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
30. 30.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
31. 31.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
32. 32.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
33. 33.🧩 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
34. 34.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 6 PM (c) 2 PM (d) not enough info
35. 35.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
36. 36.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 50 (b) not enough info (c) 5 (d) 10
37. 37.🧩 Kabir bought 4 kites for ₹100 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹100 (c) ₹30 (d) ₹25
38. 38.🧩 Vihaan bought 3 notebooks and a water bottle for ₹225 in all. Each notebook cost the same. What did one notebook cost? (a) ₹225 (b) not enough info (c) ₹222 (d) ₹75
39. 39.🧩 Rohan bought 3 notebooks and a cap for ₹195 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹65 (c) ₹195 (d) ₹192
40. 40.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 3 PM (d) 2 PM

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