Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 689 · 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.🐕 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
2. 2.🧩 Ananya bought 4 pens and a bag for ₹130 in all. Each pen cost the same. What did one pen cost? (a) ₹126 (b) ₹130 (c) ₹32 (d) not enough info
3. 3.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) for fun only (d) to waste time
4. 4.🥭 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
5. 5.🧩 Diya bought 5 mangoes and a bag for ₹255 in all. Each mango cost the same. What did one mango cost? (a) ₹255 (b) ₹51 (c) ₹250 (d) not enough info
6. 6.🧩 A box has 8 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) not enough info (b) 16 (c) 72 (d) 64
7. 7.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
8. 8.🧩 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
9. 9.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
10. 10.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
11. 11.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
12. 12.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) asking one friend (d) guessing
13. 13.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 5 PM (c) not enough info (d) 4 PM
14. 14.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
15. 15.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Arjun is 9 years old. Nisha is 2 years older than Arjun. How old is Nisha? (a) 12 (b) not enough info (c) 2 (d) 11
17. 17.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
18. 18.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
19. 19.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
20. 20.🧩 Nisha bought 6 markers and a water bottle for ₹100 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹100 (c) ₹94 (d) ₹16
21. 21.🧩 Diya bought 2 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹30 (c) ₹35 (d) ₹60
22. 22.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Ishaan is 6 years old. Nisha is 8 years older than Ishaan. How old is Nisha? (a) 8 (b) 14 (c) 15 (d) not enough info
24. 24.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
25. 25.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 9 PM (c) 6 PM (d) not enough info
26. 26.🧩 A box has 8 rows of apples, with 8 in each row. How many apples are in the box? (a) not enough info (b) 72 (c) 16 (d) 64
27. 27.🧩 Ishaan is 10 years old. Aarav is 7 years older than Ishaan. How old is Aarav? (a) 7 (b) 17 (c) not enough info (d) 18
28. 28.🧩 Meera is 8 years old. Nisha is older than Meera. How old is Nisha? (a) 13 (b) 10 (c) 9 (d) not enough info
29. 29.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
30. 30.🧩 Aarav bought 2 pens for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) not enough info (c) ₹80 (d) ₹45
31. 31.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
32. 32.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
33. 33.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) not enough info (c) 5 PM (d) 8 PM
34. 34.🧩 Tara bought 4 markers for ₹100 in all. Each marker cost the same. What did one marker cost? (a) ₹30 (b) ₹25 (c) not enough info (d) ₹100
35. 35.🧩 A box has 4 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 36 (b) 45 (c) not enough info (d) 13
36. 36.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
37. 37.🧩 Vihaan is 10 years old. Arjun is older than Vihaan. How old is Arjun? (a) 12 (b) 15 (c) not enough info (d) 11
38. 38.🧩 A box has 3 rows of apples, with 4 in each row. How many apples are in the box? (a) 16 (b) not enough info (c) 12 (d) 7
39. 39.🧩 Kabir is 11 years old. Nisha is 5 years older than Kabir. How old is Nisha? (a) 16 (b) not enough info (c) 5 (d) 17
40. 40.🧩 Arjun bought 3 pens for ₹75 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) ₹30 (c) not enough info (d) ₹75

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