Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 253 · 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.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) asking your pet (d) guessing
2. 2.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) dogs hate you (d) never see dogs
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 4 rows of apples, with 6 in each row. How many apples are in the box? (a) 24 (b) not enough info (c) 10 (d) 30
5. 5.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 7 PM (d) 6 PM
6. 6.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
7. 7.🧩 Vihaan is 6 years old. Meera is older than Vihaan. How old is Meera? (a) 8 (b) 7 (c) not enough info (d) 11
8. 8.🧩 Kabir bought 3 markers for ₹180 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹180 (c) ₹65 (d) ₹60
9. 9.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 2 PM
10. 10.🧩 A box has 4 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 20 (b) not enough info (c) 8 (d) 16
11. 11.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 7 (b) 14 (c) not enough info (d) 70
12. 12.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
13. 13.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 5 PM (d) not enough info
14. 14.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
15. 15.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
16. 16.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) 60 (b) not enough info (c) 6 (d) 12
17. 17.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
18. 18.🧩 Tara is 10 years old. Vihaan is 5 years older than Tara. How old is Vihaan? (a) 16 (b) not enough info (c) 15 (d) 5
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 mango is sweet (b) yes, it is certain (c) yes, mangoes match (d) no, check more
20. 20.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 7 PM
21. 21.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
22. 22.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 7 PM (c) 8 PM (d) 6 PM
23. 23.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 6 PM
24. 24.🧩 Diya is 9 years old. Nisha is 8 years older than Diya. How old is Nisha? (a) 18 (b) 8 (c) 17 (d) not enough info
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.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) facts that support it (d) a loud opinion
27. 27.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 9 (b) 90 (c) not enough info (d) 18
28. 28.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to change answers (d) to waste time
29. 29.🧩 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
30. 30.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
31. 31.🧩 Saanvi bought 6 balls and a lunch box for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹30 (b) not enough info (c) ₹174 (d) ₹180
32. 32.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
33. 33.🧩 Meera is 6 years old. Ishaan is 2 years older than Meera. How old is Ishaan? (a) 9 (b) 2 (c) not enough info (d) 8
34. 34.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 7 PM (c) not enough info (d) 5 PM
35. 35.🧩 A box has 6 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) not enough info (b) 63 (c) 54 (d) 15
36. 36.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
37. 37.🧩 Arjun is 11 years old. Aarav is older than Arjun. How old is Aarav? (a) 16 (b) not enough info (c) 12 (d) 13
38. 38.🧩 Rohan bought 6 pens and a water bottle for ₹280 in all. Each pen cost the same. What did one pen cost? (a) ₹274 (b) ₹280 (c) ₹46 (d) not enough info
39. 39.🧩 Diya bought 4 notebooks for ₹220 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) ₹220 (c) not enough info (d) ₹55
40. 40.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 18 (b) 9 (c) not enough info (d) 90

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