Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 612 · 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.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
2. 2.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
3. 3.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
4. 4.🧩 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
5. 5.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to be sure of results (d) to waste time
6. 6.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 4 PM
7. 7.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 3 PM (d) 5 PM
8. 8.🧩 Tara is 6 years old. Kabir is older than Tara. How old is Kabir? (a) 11 (b) not enough info (c) 7 (d) 8
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.🧩 A box of guavas has 4 in each row. How many guavas are in the box? (a) 4 (b) not enough info (c) 8 (d) 40
11. 11.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) not enough info (b) 7 PM (c) 8 PM (d) 5 PM
12. 12.🧩 Aarav is 7 years old. Meera is 5 years older than Aarav. How old is Meera? (a) 13 (b) 5 (c) not enough info (d) 12
13. 13.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
14. 14.🐕 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
15. 15.🧩 A box has 5 rows of oranges, with 6 in each row. How many oranges are in the box? (a) not enough info (b) 30 (c) 36 (d) 11
16. 16.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) asking the whole class (d) guessing
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) yes, it is certain (c) no mango is sweet (d) no, check more
18. 18.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 7 PM (d) 6 PM
19. 19.🧩 Kabir is 12 years old. Meera is older than Kabir. How old is Meera? (a) 13 (b) 17 (c) 14 (d) not enough info
20. 20.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
21. 21.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
22. 22.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 2 PM (c) 3 PM (d) 4 PM
23. 23.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
24. 24.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
25. 25.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
26. 26.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
27. 27.🧩 Kabir is 8 years old. Aarav is older than Kabir. How old is Aarav? (a) 9 (b) not enough info (c) 10 (d) 13
28. 28.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) facts that support it (d) a rumour
29. 29.🧩 Meera bought 4 balls for ₹140 in all. Each ball cost the same. What did one ball cost? (a) ₹140 (b) ₹40 (c) ₹35 (d) not enough info
30. 30.🧩 Meera is 9 years old. Diya is older than Meera. How old is Diya? (a) 10 (b) 11 (c) not enough info (d) 14
31. 31.🧩 Kabir bought 3 pens for ₹30 in all. Each pen cost the same. What did one pen cost? (a) ₹10 (b) ₹15 (c) ₹30 (d) not enough info
32. 32.🧩 Saanvi is 7 years old. Arjun is older than Saanvi. How old is Arjun? (a) not enough info (b) 8 (c) 9 (d) 12
33. 33.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
34. 34.🧩 Ananya is 10 years old. Diya is 5 years older than Ananya. How old is Diya? (a) not enough info (b) 5 (c) 15 (d) 16
35. 35.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
36. 36.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) 5 PM (d) not enough info
37. 37.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 7 (b) not enough info (c) 70 (d) 14
38. 38.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the colour of ink (d) the page number
39. 39.🧩 Ananya bought 3 notebooks for ₹30 in all. Each notebook cost the same. What did one notebook cost? (a) ₹10 (b) ₹15 (c) ₹30 (d) not enough info
40. 40.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 3 PM (c) 4 PM (d) 5 PM

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