Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 149 · 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? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
2. 2.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) no mango is sweet (c) yes, mangoes match (d) yes, it is certain
3. 3.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
4. 4.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
5. 5.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) all dogs are mean (d) dogs hate you
6. 6.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
7. 7.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
8. 8.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) guessing (d) asking the whole class
9. 9.🧩 Arjun is 9 years old. Vihaan is older than Arjun. How old is Vihaan? (a) 11 (b) 10 (c) 14 (d) not enough info
10. 10.🧩 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
11. 11.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 4 PM
12. 12.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 40 (b) not enough info (c) 8 (d) 4
13. 13.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
14. 14.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
15. 15.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
16. 16.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
17. 17.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
18. 18.🧩 Ananya is 9 years old. Diya is 4 years older than Ananya. How old is Diya? (a) 4 (b) 13 (c) 14 (d) not enough info
19. 19.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to waste time (d) to change answers
20. 20.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 5 PM
21. 21.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) 80 (b) 16 (c) not enough info (d) 8
22. 22.🧩 A box has 6 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 48 (b) not enough info (c) 56 (d) 14
23. 23.🧩 Arjun is 11 years old. Aarav is 3 years older than Arjun. How old is Aarav? (a) 3 (b) 14 (c) not enough info (d) 15
24. 24.🧩 A box has 4 rows of apples, with 4 in each row. How many apples are in the box? (a) 16 (b) 20 (c) not enough info (d) 8
25. 25.🧩 Kabir bought 3 notebooks and a bag for ₹115 in all. Each notebook cost the same. What did one notebook cost? (a) ₹38 (b) ₹115 (c) ₹112 (d) not enough info
26. 26.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
27. 27.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
28. 28.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
29. 29.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 8 PM (c) 7 PM (d) not enough info
30. 30.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
31. 31.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 9 PM (c) 5 PM (d) 8 PM
32. 32.🧩 Meera is 8 years old. Arjun is older than Meera. How old is Arjun? (a) 9 (b) not enough info (c) 10 (d) 13
33. 33.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
34. 34.🧩 Rohan is 6 years old. Nisha is older than Rohan. How old is Nisha? (a) 11 (b) 7 (c) 8 (d) not enough info
35. 35.🧩 Arjun bought 2 notebooks and a lunch box for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) ₹75 (b) ₹148 (c) not enough info (d) ₹150
36. 36.🧩 Aarav bought 6 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) ₹15 (c) ₹10 (d) not enough info
37. 37.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) 9 PM (c) 6 PM (d) not enough info
38. 38.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
39. 39.🧩 Meera is 9 years old. Rohan is older than Meera. How old is Rohan? (a) 10 (b) 14 (c) 11 (d) not enough info
40. 40.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 14 (b) 70 (c) not enough info (d) 7

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