Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 86 · 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? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) 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.🧩 A box has 5 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 48 (b) 13 (c) not enough info (d) 40
6. 6.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 8 PM (b) not enough info (c) 5 PM (d) 9 PM
7. 7.🧩 Aarav bought 6 kites and a lunch box for ₹350 in all. Each kite cost the same. What did one kite cost? (a) ₹344 (b) ₹350 (c) ₹58 (d) not enough info
8. 8.🧩 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
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking the whole class (d) asking your pet
10. 10.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
11. 11.🧩 Ananya bought 3 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹55 (b) ₹50 (c) ₹150 (d) not enough info
12. 12.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
13. 13.🧩 Ananya bought 6 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) ₹15 (b) ₹60 (c) not enough info (d) ₹10
14. 14.🧩 Vihaan bought 4 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹100 (c) ₹30 (d) ₹25
15. 15.🧩 Aarav is 11 years old. Ishaan is older than Aarav. How old is Ishaan? (a) not enough info (b) 12 (c) 13 (d) 16
16. 16.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 8 PM (c) 7 PM (d) not enough info
17. 17.🧩 Rohan bought 4 kites and a bag for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹240 (b) ₹236 (c) not enough info (d) ₹60
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.🧩 Rohan bought 4 pens for ₹200 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹55 (c) ₹200 (d) not enough info
20. 20.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
21. 21.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) 6 PM (d) not enough info
22. 22.🧩 Ishaan bought 4 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) ₹20 (c) ₹15 (d) not enough info
23. 23.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
24. 24.🧩 Rohan bought 4 notebooks and a water bottle for ₹130 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹32 (c) ₹126 (d) ₹130
25. 25.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 12 (b) 60 (c) not enough info (d) 6
26. 26.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
27. 27.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
28. 28.🧩 Ananya is 11 years old. Meera is older than Ananya. How old is Meera? (a) not enough info (b) 16 (c) 12 (d) 13
29. 29.🧩 Rohan is 8 years old. Tara is older than Rohan. How old is Tara? (a) 9 (b) not enough info (c) 10 (d) 13
30. 30.🧩 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
31. 31.🧩 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
32. 32.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
33. 33.🧩 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
34. 34.🧩 Ananya is 10 years old. Rohan is older than Ananya. How old is Rohan? (a) not enough info (b) 12 (c) 11 (d) 15
35. 35.🧩 A box has 6 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 42 (b) not enough info (c) 13 (d) 49
36. 36.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) dogs hate you (d) all dogs are mean
37. 37.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
38. 38.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
39. 39.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
40. 40.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence

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