Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 674 · 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 mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
2. 2.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
3. 3.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
4. 4.🧩 Meera is 8 years old. Kabir is older than Meera. How old is Kabir? (a) 9 (b) 10 (c) not enough info (d) 13
5. 5.🧩 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
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) asking your pet (d) guessing
7. 7.🥭 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) no mango is sweet (c) no, check more (d) yes, it is certain
8. 8.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
9. 9.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 3 PM
10. 10.🧩 A box has 8 rows of guavas, with 9 in each row. How many guavas are in the box? (a) not enough info (b) 81 (c) 72 (d) 17
11. 11.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) never see dogs (d) all dogs are mean
12. 12.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
13. 13.🧩 Arjun is 11 years old. Diya is older than Arjun. How old is Diya? (a) 13 (b) 12 (c) not enough info (d) 16
14. 14.🧩 A box has 3 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 28 (b) not enough info (c) 21 (d) 10
15. 15.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
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.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
18. 18.🧩 Tara is 11 years old. Rohan is older than Tara. How old is Rohan? (a) 12 (b) 13 (c) not enough info (d) 16
19. 19.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 9 PM (c) not enough info (d) 7 PM
20. 20.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
21. 21.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 9 PM (c) not enough info (d) 8 PM
22. 22.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) for fun only (d) to waste time
23. 23.🧩 A box has 3 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 9 (b) not enough info (c) 18 (d) 24
24. 24.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 8 PM
25. 25.🧩 A box has 6 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 13 (b) 49 (c) 42 (d) not enough info
26. 26.🧩 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
27. 27.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
28. 28.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
29. 29.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
30. 30.🧩 Tara bought 4 pens and a cap for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹116 (b) not enough info (c) ₹120 (d) ₹30
31. 31.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
32. 32.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
33. 33.🧩 Vihaan bought 6 notebooks and a cap for ₹350 in all. Each notebook cost the same. What did one notebook cost? (a) ₹58 (b) ₹350 (c) not enough info (d) ₹344
34. 34.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
35. 35.🧩 Rohan is 10 years old. Vihaan is older than Rohan. How old is Vihaan? (a) not enough info (b) 15 (c) 11 (d) 12
36. 36.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 50 (b) 5 (c) not enough info (d) 10
37. 37.🧩 Tara bought 5 pens and a water bottle for ₹160 in all. Each pen cost the same. What did one pen cost? (a) ₹155 (b) ₹32 (c) ₹160 (d) not enough info
38. 38.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 9 (b) 18 (c) not enough info (d) 90
39. 39.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
40. 40.🧩 Ananya is 7 years old. Diya is older than Ananya. How old is Diya? (a) not enough info (b) 12 (c) 9 (d) 8

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