Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 698 · 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.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) dogs hate you (d) that one dog barked
2. 2.🧩 Aarav is 12 years old. Arjun is older than Aarav. How old is Arjun? (a) not enough info (b) 13 (c) 14 (d) 17
3. 3.🧩 Arjun bought 2 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹35 (b) not enough info (c) ₹30 (d) ₹60
4. 4.🥭 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
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
6. 6.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) not enough info (b) 80 (c) 8 (d) 16
7. 7.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
8. 8.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
9. 9.🧩 Saanvi is 8 years old. Tara is 3 years older than Saanvi. How old is Tara? (a) 3 (b) not enough info (c) 12 (d) 11
10. 10.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
11. 11.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
12. 12.🧩 Ishaan bought 5 mangoes for ₹150 in all. Each mango cost the same. What did one mango cost? (a) ₹150 (b) not enough info (c) ₹30 (d) ₹35
13. 13.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
14. 14.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) 6 PM (d) not enough info
15. 15.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
16. 16.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
17. 17.🧩 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
18. 18.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
19. 19.🧩 A box has 3 rows of eggs, with 5 in each row. How many eggs are in the box? (a) not enough info (b) 20 (c) 15 (d) 8
20. 20.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a loud opinion (d) a rumour
21. 21.🧩 Arjun bought 2 markers and a bag for ₹110 in all. Each marker cost the same. What did one marker cost? (a) ₹108 (b) ₹110 (c) ₹55 (d) not enough info
22. 22.🧩 A box has 5 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 13 (b) not enough info (c) 48 (d) 40
23. 23.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
24. 24.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) not enough info (d) 5 PM
25. 25.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 2 PM
26. 26.🧩 A box has 4 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 8 (b) 20 (c) 16 (d) not enough info
27. 27.🧩 Nisha bought 2 pens and a lunch box for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹98 (b) ₹100 (c) not enough info (d) ₹50
28. 28.🧩 Aarav bought 4 pens for ₹160 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹40 (c) ₹45 (d) ₹160
29. 29.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 5 PM (c) 9 PM (d) 8 PM
30. 30.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
31. 31.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
32. 32.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) not enough info (d) 5 PM
33. 33.🧩 A box has 8 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 14 (b) not enough info (c) 54 (d) 48
34. 34.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
35. 35.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) what facts are given (d) the page number
36. 36.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
37. 37.🧩 Meera bought 2 mangoes and a cap for ₹140 in all. Each mango cost the same. What did one mango cost? (a) ₹140 (b) ₹70 (c) ₹138 (d) not enough info
38. 38.🧩 Meera bought 5 notebooks and a bag for ₹220 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹215 (c) ₹44 (d) ₹220
39. 39.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) for fun only (d) to be sure of results
40. 40.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 9 PM

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