Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 686 · 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 and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 2 PM (d) 3 PM
2. 2.🧩 Ananya is 7 years old. Meera is older than Ananya. How old is Meera? (a) 12 (b) not enough info (c) 9 (d) 8
3. 3.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
4. 4.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
5. 5.🧩 Saanvi is 8 years old. Rohan is older than Saanvi. How old is Rohan? (a) 9 (b) 10 (c) 13 (d) not enough info
6. 6.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 8 PM (c) not enough info (d) 7 PM
7. 7.🧩 Diya bought 2 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹65 (c) ₹120 (d) ₹60
8. 8.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
9. 9.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 7 PM
10. 10.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
11. 11.🧩 Nisha is 7 years old. Vihaan is older than Nisha. How old is Vihaan? (a) not enough info (b) 9 (c) 8 (d) 12
12. 12.🧩 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
13. 13.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) no mango is sweet (c) no, check more (d) yes, mangoes match
14. 14.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
15. 15.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
16. 16.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 3 PM
17. 17.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
18. 18.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
19. 19.🧩 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
20. 20.🧩 Aarav bought 2 notebooks for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) ₹110 (b) not enough info (c) ₹55 (d) ₹60
21. 21.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
22. 22.🧩 A box has 7 rows of guavas, with 5 in each row. How many guavas are in the box? (a) not enough info (b) 12 (c) 40 (d) 35
23. 23.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
24. 24.🧩 Kabir bought 5 pens and a bag for ₹320 in all. Each pen cost the same. What did one pen cost? (a) ₹64 (b) ₹320 (c) ₹315 (d) not enough info
25. 25.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) what facts are given (d) your handwriting
26. 26.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
27. 27.🧩 Ananya is 7 years old. Aarav is 3 years older than Ananya. How old is Aarav? (a) not enough info (b) 10 (c) 3 (d) 11
28. 28.🧩 Ishaan is 12 years old. Saanvi is 7 years older than Ishaan. How old is Saanvi? (a) 19 (b) not enough info (c) 7 (d) 20
29. 29.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) all dogs are mean (d) that one dog barked
30. 30.🧩 Rohan is 6 years old. Aarav is 2 years older than Rohan. How old is Aarav? (a) 8 (b) not enough info (c) 9 (d) 2
31. 31.🧩 Rohan bought 2 notebooks and a lunch box for ₹160 in all. Each notebook cost the same. What did one notebook cost? (a) ₹158 (b) ₹80 (c) ₹160 (d) not enough info
32. 32.🧩 Rohan bought 3 markers and a bag for ₹140 in all. Each marker cost the same. What did one marker cost? (a) ₹137 (b) not enough info (c) ₹140 (d) ₹46
33. 33.🧩 Nisha bought 4 notebooks for ₹160 in all. Each notebook cost the same. What did one notebook cost? (a) ₹45 (b) ₹40 (c) ₹160 (d) not enough info
34. 34.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 5 PM
35. 35.🧩 Ishaan bought 2 pens for ₹40 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) ₹20 (c) ₹40 (d) not enough info
36. 36.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
37. 37.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 6 (b) not enough info (c) 12 (d) 60
38. 38.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
39. 39.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
40. 40.🧩 Ananya bought 3 pens for ₹75 in all. Each pen cost the same. What did one pen cost? (a) ₹75 (b) not enough info (c) ₹25 (d) ₹30

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