Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 924 · 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: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
2. 2.🧩 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
3. 3.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) 5 PM (c) not enough info (d) 4 PM
4. 4.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
5. 5.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 12 (b) 6 (c) 60 (d) not enough info
6. 6.🧩 Tara is 12 years old. Saanvi is older than Tara. How old is Saanvi? (a) 17 (b) not enough info (c) 13 (d) 14
7. 7.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) that one dog barked (d) all dogs are mean
8. 8.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) a loud opinion (d) facts that support it
9. 9.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
10. 10.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) 8 PM (d) not enough info
11. 11.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
12. 12.🧩 A box has 3 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 16 (b) 7 (c) not enough info (d) 12
13. 13.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
14. 14.🧩 Diya bought 6 mangoes and a cap for ₹230 in all. Each mango cost the same. What did one mango cost? (a) ₹38 (b) ₹224 (c) ₹230 (d) not enough info
15. 15.🧩 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
16. 16.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
17. 17.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 3 PM
18. 18.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
19. 19.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
20. 20.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 2 PM
21. 21.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 6 PM (d) not enough info
22. 22.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
23. 23.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
24. 24.🧩 Aarav bought 2 notebooks and a water bottle for ₹130 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹128 (c) ₹65 (d) ₹130
25. 25.🧩 A box has 4 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 8 (c) 16 (d) 20
26. 26.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
27. 27.🧩 Ishaan is 11 years old. Tara is 6 years older than Ishaan. How old is Tara? (a) not enough info (b) 6 (c) 17 (d) 18
28. 28.🧩 Arjun bought 5 balls for ₹100 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) not enough info (c) ₹100 (d) ₹25
29. 29.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
30. 30.🧩 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
31. 31.🧩 Vihaan bought 6 markers for ₹300 in all. Each marker cost the same. What did one marker cost? (a) ₹55 (b) ₹300 (c) ₹50 (d) not enough info
32. 32.🧩 Arjun bought 3 markers for ₹45 in all. Each marker cost the same. What did one marker cost? (a) ₹45 (b) ₹20 (c) ₹15 (d) not enough info
33. 33.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
34. 34.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
35. 35.🧩 Ishaan bought 5 markers for ₹100 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹25 (c) ₹20 (d) ₹100
36. 36.🧩 Ishaan bought 6 notebooks and a bag for ₹230 in all. Each notebook cost the same. What did one notebook cost? (a) ₹230 (b) not enough info (c) ₹38 (d) ₹224
37. 37.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 7 PM
38. 38.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 3 PM (d) 2 PM
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 mango is sweet (d) no, check more
40. 40.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence

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