Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 341 · 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.🧩 Kabir bought 2 pens for ₹50 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) not enough info (c) ₹25 (d) ₹50
2. 2.🧩 Kabir is 7 years old. Meera is 7 years older than Kabir. How old is Meera? (a) 15 (b) 7 (c) not enough info (d) 14
3. 3.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 7 PM (c) 8 PM (d) not enough info
4. 4.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking one friend (d) asking the whole class
5. 5.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) facts that support it (d) a rumour
6. 6.🧩 Rohan is 11 years old. Tara is older than Rohan. How old is Tara? (a) not enough info (b) 13 (c) 12 (d) 16
7. 7.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 5 PM
8. 8.🧩 A box has 5 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 10 (b) 25 (c) not enough info (d) 30
9. 9.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
10. 10.🧩 Diya is 10 years old. Saanvi is 4 years older than Diya. How old is Saanvi? (a) not enough info (b) 14 (c) 4 (d) 15
11. 11.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
12. 12.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) to change answers (d) for fun only
13. 13.🧩 A box has 5 rows of oranges, with 4 in each row. How many oranges are in the box? (a) not enough info (b) 24 (c) 9 (d) 20
14. 14.🥭 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, check more (c) yes, mangoes match (d) no mango is sweet
15. 15.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) all dogs are mean (d) that one dog barked
16. 16.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
17. 17.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
18. 18.🧩 Ananya is 10 years old. Saanvi is older than Ananya. How old is Saanvi? (a) 11 (b) 15 (c) not enough info (d) 12
19. 19.🧩 A box has 7 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 11 (c) 28 (d) 32
20. 20.🧩 Aarav bought 2 kites and a cap for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) ₹30 (c) ₹58 (d) not enough info
21. 21.🧩 A box has 8 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 54 (b) not enough info (c) 14 (d) 48
22. 22.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Kabir is 6 years old. Meera is 7 years older than Kabir. How old is Meera? (a) 7 (b) 14 (c) 13 (d) not enough info
24. 24.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
25. 25.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
26. 26.🧩 Diya is 6 years old. Saanvi is older than Diya. How old is Saanvi? (a) 11 (b) 7 (c) not enough info (d) 8
27. 27.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 5 PM
28. 28.🧩 Saanvi is 8 years old. Kabir is 6 years older than Saanvi. How old is Kabir? (a) 14 (b) 15 (c) 6 (d) not enough info
29. 29.🧩 Nisha bought 4 markers and a lunch box for ₹110 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹110 (c) ₹27 (d) ₹106
30. 30.🧩 Kabir is 11 years old. Arjun is 2 years older than Kabir. How old is Arjun? (a) not enough info (b) 14 (c) 13 (d) 2
31. 31.🧩 A box has 5 rows of guavas, with 5 in each row. How many guavas are in the box? (a) not enough info (b) 25 (c) 30 (d) 10
32. 32.🧩 Aarav is 6 years old. Saanvi is older than Aarav. How old is Saanvi? (a) 8 (b) 7 (c) not enough info (d) 11
33. 33.🧩 Aarav is 12 years old. Ishaan is 7 years older than Aarav. How old is Ishaan? (a) 19 (b) not enough info (c) 7 (d) 20
34. 34.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
35. 35.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 3 PM (d) 5 PM
36. 36.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 6 PM
37. 37.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
38. 38.🧩 A box has 7 rows of apples, with 6 in each row. How many apples are in the box? (a) 13 (b) 48 (c) not enough info (d) 42
39. 39.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
40. 40.🧩 Tara is 6 years old. Saanvi is older than Tara. How old is Saanvi? (a) 11 (b) 8 (c) not enough info (d) 7

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