Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 912 · 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.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 4 PM
2. 2.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 50 (b) 5 (c) not enough info (d) 10
3. 3.🧩 Diya bought 5 mangoes and a cap for ₹170 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹34 (c) ₹170 (d) ₹165
4. 4.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
5. 5.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 2 PM
6. 6.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
7. 7.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
8. 8.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to waste time (d) to be sure of results
9. 9.🧩 Nisha bought 5 notebooks for ₹250 in all. Each notebook cost the same. What did one notebook cost? (a) ₹55 (b) ₹250 (c) not enough info (d) ₹50
10. 10.🧩 Ishaan is 10 years old. Meera is older than Ishaan. How old is Meera? (a) not enough info (b) 12 (c) 11 (d) 15
11. 11.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
12. 12.🧩 Rohan is 6 years old. Ananya is 7 years older than Rohan. How old is Ananya? (a) 14 (b) 7 (c) not enough info (d) 13
13. 13.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
14. 14.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
15. 15.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) not enough info (b) 6 (c) 60 (d) 12
16. 16.🧩 Arjun bought 5 notebooks and a cap for ₹355 in all. Each notebook cost the same. What did one notebook cost? (a) ₹71 (b) ₹355 (c) not enough info (d) ₹350
17. 17.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 16 (b) 8 (c) not enough info (d) 80
18. 18.🧩 Tara is 11 years old. Meera is older than Tara. How old is Meera? (a) 12 (b) 13 (c) 16 (d) not enough info
19. 19.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
20. 20.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
21. 21.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) not enough info (d) 2 PM
22. 22.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
23. 23.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 16 (b) 80 (c) 8 (d) not enough info
24. 24.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
25. 25.🧩 Aarav is 11 years old. Kabir is older than Aarav. How old is Kabir? (a) 12 (b) 13 (c) 16 (d) not enough info
26. 26.🧩 Aarav is 9 years old. Ishaan is older than Aarav. How old is Ishaan? (a) 14 (b) not enough info (c) 10 (d) 11
27. 27.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
28. 28.🧩 Saanvi bought 2 pens and a bag for ₹120 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹120 (c) ₹60 (d) ₹118
29. 29.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
30. 30.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
31. 31.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
32. 32.🧩 Aarav is 7 years old. Arjun is older than Aarav. How old is Arjun? (a) not enough info (b) 9 (c) 12 (d) 8
33. 33.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking the whole class (d) asking your pet
34. 34.🧩 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
35. 35.🧩 Kabir is 9 years old. Ananya is 2 years older than Kabir. How old is Ananya? (a) 12 (b) not enough info (c) 2 (d) 11
36. 36.🧩 Diya is 9 years old. Kabir is older than Diya. How old is Kabir? (a) not enough info (b) 14 (c) 10 (d) 11
37. 37.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
38. 38.🧩 Rohan is 11 years old. Kabir is older than Rohan. How old is Kabir? (a) 12 (b) 13 (c) 16 (d) not enough info
39. 39.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
40. 40.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False

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