Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 62 · 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.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) for fun only (d) to be sure of results
2. 2.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 4 PM
3. 3.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 3 PM (d) not enough info
4. 4.🧩 Ishaan is 6 years old. Rohan is older than Ishaan. How old is Rohan? (a) 11 (b) not enough info (c) 7 (d) 8
5. 5.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 7 PM (c) not enough info (d) 6 PM
6. 6.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
7. 7.🧩 Nisha is 10 years old. Arjun is older than Nisha. How old is Arjun? (a) 15 (b) 12 (c) not enough info (d) 11
8. 8.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
9. 9.🧩 Tara bought 3 notebooks for ₹30 in all. Each notebook cost the same. What did one notebook cost? (a) ₹30 (b) ₹15 (c) not enough info (d) ₹10
10. 10.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
11. 11.🧩 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
12. 12.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
13. 13.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
14. 14.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
15. 15.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
16. 16.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
17. 17.🐕 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
18. 18.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
19. 19.🧩 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
20. 20.🧩 Meera is 8 years old. Diya is 8 years older than Meera. How old is Diya? (a) 16 (b) 17 (c) not enough info (d) 8
21. 21.🧩 Kabir is 8 years old. Vihaan is 4 years older than Kabir. How old is Vihaan? (a) 4 (b) 13 (c) 12 (d) not enough info
22. 22.🧩 Ishaan bought 3 notebooks for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹180 (b) ₹65 (c) not enough info (d) ₹60
23. 23.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
24. 24.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
25. 25.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 7 (b) 14 (c) not enough info (d) 70
26. 26.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 7 PM
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.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
29. 29.🧩 Kabir is 9 years old. Meera is 8 years older than Kabir. How old is Meera? (a) 8 (b) 17 (c) not enough info (d) 18
30. 30.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) not enough info (b) 5 (c) 10 (d) 50
31. 31.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 90 (b) not enough info (c) 18 (d) 9
32. 32.🧩 Diya is 9 years old. Aarav is older than Diya. How old is Aarav? (a) not enough info (b) 10 (c) 11 (d) 14
33. 33.🧩 Vihaan bought 6 kites and a bag for ₹390 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹384 (c) ₹390 (d) ₹65
34. 34.🧩 Meera is 6 years old. Tara is 3 years older than Meera. How old is Tara? (a) not enough info (b) 10 (c) 9 (d) 3
35. 35.🧩 Aarav bought 2 markers and a bag for ₹100 in all. Each marker cost the same. What did one marker cost? (a) ₹98 (b) ₹50 (c) not enough info (d) ₹100
36. 36.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 9 PM (c) not enough info (d) 8 PM
37. 37.🧩 Arjun bought 4 kites for ₹200 in all. Each kite cost the same. What did one kite cost? (a) ₹200 (b) ₹50 (c) ₹55 (d) not enough info
38. 38.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
39. 39.🧩 Nisha is 11 years old. Tara is older than Nisha. How old is Tara? (a) 12 (b) 13 (c) 16 (d) not enough info
40. 40.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) not enough info (b) 9 PM (c) 8 PM (d) 6 PM

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