Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 709 · 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 3 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 4 PM
2. 2.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 6 PM
3. 3.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
4. 4.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 40 (b) not enough info (c) 4 (d) 8
5. 5.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
6. 6.🧩 A box has 6 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 28 (b) 10 (c) not enough info (d) 24
7. 7.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
8. 8.🧩 Diya bought 6 markers and a lunch box for ₹350 in all. Each marker cost the same. What did one marker cost? (a) ₹58 (b) not enough info (c) ₹344 (d) ₹350
9. 9.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
10. 10.🧩 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
11. 11.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
12. 12.🧩 Aarav is 7 years old. Vihaan is 5 years older than Aarav. How old is Vihaan? (a) not enough info (b) 13 (c) 5 (d) 12
13. 13.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
14. 14.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 2 PM (c) 5 PM (d) 6 PM
15. 15.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
16. 16.🧩 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
17. 17.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
18. 18.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
19. 19.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
20. 20.📊 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
21. 21.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
22. 22.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 5 (b) not enough info (c) 50 (d) 10
23. 23.🧩 Arjun is 11 years old. Kabir is 7 years older than Arjun. How old is Kabir? (a) 19 (b) not enough info (c) 18 (d) 7
24. 24.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 60 (b) 12 (c) not enough info (d) 6
25. 25.🧩 Aarav bought 2 mangoes and a bag for ₹60 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹58 (c) ₹30 (d) ₹60
26. 26.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) all dogs are mean (d) never see dogs
27. 27.🧩 Aarav is 10 years old. Meera is older than Aarav. How old is Meera? (a) not enough info (b) 12 (c) 15 (d) 11
28. 28.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 3 PM (c) 5 PM (d) not enough info
29. 29.🧩 Ananya is 8 years old. Diya is 3 years older than Ananya. How old is Diya? (a) not enough info (b) 12 (c) 11 (d) 3
30. 30.🧩 Arjun is 8 years old. Rohan is 7 years older than Arjun. How old is Rohan? (a) 15 (b) 16 (c) not enough info (d) 7
31. 31.🧩 Saanvi is 7 years old. Kabir is 7 years older than Saanvi. How old is Kabir? (a) not enough info (b) 7 (c) 15 (d) 14
32. 32.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 7 PM (c) not enough info (d) 8 PM
33. 33.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
34. 34.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
35. 35.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
36. 36.🧩 Kabir is 10 years old. Arjun is 7 years older than Kabir. How old is Arjun? (a) 18 (b) not enough info (c) 17 (d) 7
37. 37.🧩 Vihaan bought 4 mangoes for ₹40 in all. Each mango cost the same. What did one mango cost? (a) ₹15 (b) not enough info (c) ₹40 (d) ₹10
38. 38.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
39. 39.🥭 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, check more (d) no mango is sweet
40. 40.🧩 Nisha bought 2 pens for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹80 (b) not enough info (c) ₹40 (d) ₹45

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