Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 793 · 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) enough evidence (b) not enough evidence
2. 2.🧩 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
3. 3.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 4 PM
4. 4.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) for fun only (d) to change answers
5. 5.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking one friend (d) asking the whole class
7. 7.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
8. 8.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
9. 9.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
10. 10.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a loud opinion (d) a rumour
11. 11.🧩 Ananya is 6 years old. Nisha is older than Ananya. How old is Nisha? (a) 7 (b) 11 (c) 8 (d) not enough info
12. 12.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 3 PM (c) not enough info (d) 5 PM
13. 13.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
14. 14.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
15. 15.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 2 PM (c) 3 PM (d) not enough info
16. 16.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) never see dogs (d) that one dog barked
17. 17.🥭 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) no, check more (d) yes, it is certain
18. 18.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
19. 19.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
20. 20.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 7 PM (d) 6 PM
21. 21.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
22. 22.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
23. 23.🧩 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
24. 24.🧩 Ananya bought 5 markers and a water bottle for ₹330 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹325 (c) ₹66 (d) ₹330
25. 25.🧩 A box has 7 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 12 (b) 35 (c) not enough info (d) 40
26. 26.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 60 (b) 6 (c) not enough info (d) 12
27. 27.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
28. 28.🧩 Diya bought 6 kites for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹120 (b) not enough info (c) ₹20 (d) ₹25
29. 29.🧩 Diya is 6 years old. Kabir is older than Diya. How old is Kabir? (a) 8 (b) 11 (c) 7 (d) not enough info
30. 30.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 8 PM (c) 9 PM (d) not enough info
31. 31.🧩 A box has 4 rows of guavas, with 5 in each row. How many guavas are in the box? (a) not enough info (b) 9 (c) 20 (d) 25
32. 32.🧩 Ishaan is 7 years old. Tara is 4 years older than Ishaan. How old is Tara? (a) 12 (b) 11 (c) 4 (d) not enough info
33. 33.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
34. 34.🧩 Arjun is 9 years old. Saanvi is 2 years older than Arjun. How old is Saanvi? (a) 12 (b) not enough info (c) 11 (d) 2
35. 35.🧩 Tara bought 5 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) ₹20 (c) not enough info (d) ₹100
36. 36.🧩 Diya is 12 years old. Ananya is older than Diya. How old is Ananya? (a) 17 (b) 14 (c) 13 (d) not enough info
37. 37.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
38. 38.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) 6 PM (d) not enough info
39. 39.🧩 Tara is 8 years old. Kabir is 2 years older than Tara. How old is Kabir? (a) 11 (b) not enough info (c) 10 (d) 2
40. 40.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) not enough info (b) 50 (c) 10 (d) 5

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