Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 527 · 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.🧩 Diya bought 2 kites for ₹40 in all. Each kite cost the same. What did one kite cost? (a) ₹25 (b) ₹20 (c) not enough info (d) ₹40
2. 2.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
3. 3.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
4. 4.🧩 A box has 7 rows of guavas, with 8 in each row. How many guavas are in the box? (a) not enough info (b) 56 (c) 64 (d) 15
5. 5.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) guessing (d) asking your pet
7. 7.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 6 PM
8. 8.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 7 PM (c) 6 PM (d) not enough info
9. 9.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
10. 10.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
11. 11.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 7 PM (c) 6 PM (d) not enough info
12. 12.🧩 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
13. 13.🧩 Meera bought 5 markers for ₹50 in all. Each marker cost the same. What did one marker cost? (a) ₹50 (b) ₹15 (c) not enough info (d) ₹10
14. 14.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
15. 15.🧩 Ishaan is 11 years old. Aarav is 3 years older than Ishaan. How old is Aarav? (a) 14 (b) not enough info (c) 15 (d) 3
16. 16.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
17. 17.🧩 Tara is 9 years old. Vihaan is 3 years older than Tara. How old is Vihaan? (a) 12 (b) 3 (c) 13 (d) not enough info
18. 18.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a rumour (d) a guess
19. 19.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, it is certain (c) yes, mangoes match (d) no mango is sweet
20. 20.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) not enough info (c) 4 PM (d) 5 PM
21. 21.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 4 PM
22. 22.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
23. 23.🧩 Nisha is 12 years old. Diya is older than Nisha. How old is Diya? (a) 14 (b) 17 (c) not enough info (d) 13
24. 24.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) not enough info (c) 6 PM (d) 7 PM
25. 25.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) all dogs are mean (d) dogs hate you
26. 26.🧩 Nisha is 8 years old. Tara is older than Nisha. How old is Tara? (a) 9 (b) not enough info (c) 13 (d) 10
27. 27.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
28. 28.🧩 Ishaan is 10 years old. Diya is 8 years older than Ishaan. How old is Diya? (a) 19 (b) not enough info (c) 18 (d) 8
29. 29.🧩 A box has 3 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 12 (b) 16 (c) 7 (d) not enough info
30. 30.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
31. 31.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) not enough info (c) 5 PM (d) 6 PM
32. 32.🧩 Saanvi is 7 years old. Meera is older than Saanvi. How old is Meera? (a) 8 (b) 12 (c) 9 (d) not enough info
33. 33.🧩 Nisha is 7 years old. Tara is 4 years older than Nisha. How old is Tara? (a) not enough info (b) 4 (c) 12 (d) 11
34. 34.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) what facts are given (d) the colour of ink
35. 35.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 6 PM (d) 7 PM
36. 36.🧩 Ishaan is 12 years old. Kabir is older than Ishaan. How old is Kabir? (a) 17 (b) not enough info (c) 13 (d) 14
37. 37.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
38. 38.🧩 Kabir bought 6 mangoes for ₹210 in all. Each mango cost the same. What did one mango cost? (a) ₹35 (b) ₹40 (c) ₹210 (d) not enough info
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.🧩 Vihaan is 7 years old. Meera is older than Vihaan. How old is Meera? (a) 8 (b) 9 (c) not enough info (d) 12

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