Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 789 · 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.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) 5 PM (d) not enough info
2. 2.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) not enough info (b) 12 (c) 6 (d) 60
3. 3.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
4. 4.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
5. 5.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
6. 6.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
7. 7.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 6 PM (c) 4 PM (d) not enough info
8. 8.🧩 Kabir bought 2 notebooks for ₹20 in all. Each notebook cost the same. What did one notebook cost? (a) ₹15 (b) not enough info (c) ₹20 (d) ₹10
9. 9.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
10. 10.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 5 PM
11. 11.🧩 Vihaan bought 6 notebooks for ₹210 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) not enough info (c) ₹35 (d) ₹210
12. 12.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) 5 PM (c) 6 PM (d) not enough info
13. 13.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
14. 14.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
15. 15.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) 5 PM (c) not enough info (d) 6 PM
16. 16.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no mango is sweet (c) yes, it is certain (d) no, check more
17. 17.🧩 Diya bought 3 pens for ₹30 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹30 (c) ₹15 (d) ₹10
18. 18.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
19. 19.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
20. 20.🧩 A box has 4 rows of oranges, with 5 in each row. How many oranges are in the box? (a) not enough info (b) 9 (c) 25 (d) 20
21. 21.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
22. 22.🧩 Arjun bought 5 mangoes for ₹275 in all. Each mango cost the same. What did one mango cost? (a) ₹275 (b) not enough info (c) ₹60 (d) ₹55
23. 23.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) for fun only (d) to change answers
24. 24.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
25. 25.🧩 A box has 5 rows of apples, with 4 in each row. How many apples are in the box? (a) 24 (b) not enough info (c) 20 (d) 9
26. 26.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
27. 27.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
28. 28.🧩 A box has 3 rows of apples, with 7 in each row. How many apples are in the box? (a) not enough info (b) 28 (c) 21 (d) 10
29. 29.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) dogs hate you (d) that one dog barked
30. 30.🧩 A box has 5 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 14 (b) 54 (c) 45 (d) not enough info
31. 31.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
32. 32.🧩 A box has 7 rows of apples, with 7 in each row. How many apples are in the box? (a) 56 (b) 14 (c) 49 (d) not enough info
33. 33.🧩 Ananya is 6 years old. Aarav is older than Ananya. How old is Aarav? (a) not enough info (b) 8 (c) 11 (d) 7
34. 34.🧩 Ishaan bought 3 balls for ₹150 in all. Each ball cost the same. What did one ball cost? (a) ₹55 (b) ₹150 (c) not enough info (d) ₹50
35. 35.🧩 Meera is 6 years old. Aarav is 6 years older than Meera. How old is Aarav? (a) 6 (b) 13 (c) not enough info (d) 12
36. 36.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
37. 37.🧩 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
38. 38.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
39. 39.🧩 Tara is 11 years old. Nisha is 8 years older than Tara. How old is Nisha? (a) 20 (b) not enough info (c) 8 (d) 19
40. 40.🧩 Meera is 10 years old. Diya is older than Meera. How old is Diya? (a) 11 (b) 12 (c) 15 (d) not enough info

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