Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 161 · 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: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
2. 2.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
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? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
5. 5.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
6. 6.🧩 Ishaan bought 2 mangoes for ₹50 in all. Each mango cost the same. What did one mango cost? (a) ₹50 (b) ₹25 (c) not enough info (d) ₹30
7. 7.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking one friend (d) asking the whole class
8. 8.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) not enough info (c) 6 PM (d) 7 PM
9. 9.🧩 Ananya is 6 years old. Rohan is 4 years older than Ananya. How old is Rohan? (a) 11 (b) not enough info (c) 4 (d) 10
10. 10.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) 7 PM (d) not enough info
11. 11.🧩 Kabir bought 3 kites and a lunch box for ₹215 in all. Each kite cost the same. What did one kite cost? (a) ₹71 (b) ₹212 (c) ₹215 (d) not enough info
12. 12.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 7 (b) 70 (c) 14 (d) not enough info
13. 13.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
14. 14.🧩 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
15. 15.🧩 Saanvi bought 5 pens and a lunch box for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹115 (b) ₹24 (c) not enough info (d) ₹120
16. 16.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
17. 17.🧩 Ananya is 8 years old. Arjun is 7 years older than Ananya. How old is Arjun? (a) 16 (b) 15 (c) 7 (d) not enough info
18. 18.🧩 Diya is 10 years old. Nisha is older than Diya. How old is Nisha? (a) 11 (b) 12 (c) not enough info (d) 15
19. 19.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
20. 20.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
21. 21.🧩 Meera bought 6 balls and a bag for ₹340 in all. Each ball cost the same. What did one ball cost? (a) ₹340 (b) not enough info (c) ₹56 (d) ₹334
22. 22.🧩 Aarav is 11 years old. Meera is 9 years older than Aarav. How old is Meera? (a) not enough info (b) 20 (c) 9 (d) 21
23. 23.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
24. 24.🧩 Arjun bought 3 notebooks and a cap for ₹80 in all. Each notebook cost the same. What did one notebook cost? (a) ₹26 (b) ₹80 (c) ₹77 (d) not enough info
25. 25.🧩 A box has 3 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 36 (b) not enough info (c) 12 (d) 27
26. 26.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
27. 27.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
28. 28.🧩 Vihaan is 6 years old. Meera is 5 years older than Vihaan. How old is Meera? (a) not enough info (b) 12 (c) 5 (d) 11
29. 29.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
30. 30.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
31. 31.🧩 Saanvi is 7 years old. Vihaan is 8 years older than Saanvi. How old is Vihaan? (a) 16 (b) 8 (c) 15 (d) not enough info
32. 32.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) 5 PM (d) not enough info
33. 33.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
34. 34.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
35. 35.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 2 PM (d) 4 PM
36. 36.🧩 Diya bought 2 balls for ₹70 in all. Each ball cost the same. What did one ball cost? (a) ₹70 (b) ₹40 (c) ₹35 (d) not enough info
37. 37.🧩 Saanvi is 7 years old. Nisha is 2 years older than Saanvi. How old is Nisha? (a) 9 (b) not enough info (c) 10 (d) 2
38. 38.🧩 Aarav bought 2 pens and a water bottle for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) not enough info (c) ₹60 (d) ₹58
39. 39.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
40. 40.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs

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