Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 330 · 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? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
2. 2.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a rumour (d) a loud opinion
3. 3.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 3 PM
4. 4.🧩 Rohan is 6 years old. Tara is 2 years older than Rohan. How old is Tara? (a) 9 (b) 8 (c) not enough info (d) 2
5. 5.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
6. 6.🧩 A box has 7 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 56 (b) 64 (c) not enough info (d) 15
7. 7.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
8. 8.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” 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) False (b) True
10. 10.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 6 PM (d) 7 PM
11. 11.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 5 PM (d) 4 PM
12. 12.🧩 Meera bought 3 markers and a water bottle for ₹200 in all. Each marker cost the same. What did one marker cost? (a) ₹66 (b) ₹200 (c) ₹197 (d) not enough info
13. 13.🧩 Nisha is 11 years old. Vihaan is 5 years older than Nisha. How old is Vihaan? (a) 17 (b) 16 (c) 5 (d) not enough info
14. 14.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
15. 15.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking one friend (d) asking your pet
16. 16.🧩 Nisha bought 4 notebooks for ₹160 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹40 (c) ₹45 (d) ₹160
17. 17.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 8 (b) not enough info (c) 16 (d) 80
18. 18.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
19. 19.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Diya bought 3 balls and a water bottle for ₹130 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹127 (c) ₹43 (d) ₹130
21. 21.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
22. 22.🧩 Vihaan bought 6 kites for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) not enough info (c) ₹25 (d) ₹150
23. 23.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 16 (b) 80 (c) not enough info (d) 8
24. 24.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
25. 25.🧩 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
26. 26.🧩 Meera is 11 years old. Kabir is older than Meera. How old is Kabir? (a) 13 (b) 16 (c) not enough info (d) 12
27. 27.🧩 A box has 3 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 12 (b) 36 (c) 27 (d) not enough info
28. 28.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
29. 29.🧩 A box has 7 rows of guavas, with 5 in each row. How many guavas are in the box? (a) not enough info (b) 40 (c) 12 (d) 35
30. 30.🧩 Arjun is 12 years old. Tara is 4 years older than Arjun. How old is Tara? (a) 4 (b) 17 (c) not enough info (d) 16
31. 31.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
32. 32.🧩 Aarav bought 3 notebooks and a lunch box for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) ₹147 (b) not enough info (c) ₹150 (d) ₹50
33. 33.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 5 PM
34. 34.🧩 Aarav bought 6 kites for ₹270 in all. Each kite cost the same. What did one kite cost? (a) ₹270 (b) ₹45 (c) ₹50 (d) not enough info
35. 35.🧩 Aarav is 7 years old. Rohan is 7 years older than Aarav. How old is Rohan? (a) 15 (b) not enough info (c) 7 (d) 14
36. 36.🧩 Meera bought 5 notebooks and a water bottle for ₹355 in all. Each notebook cost the same. What did one notebook cost? (a) ₹355 (b) ₹71 (c) ₹350 (d) not enough info
37. 37.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
38. 38.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) not enough info (b) 60 (c) 12 (d) 6
39. 39.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 90 (b) 9 (c) 18 (d) not enough info
40. 40.🧩 Nisha bought 5 markers for ₹75 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹20 (c) ₹75 (d) ₹15

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