Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 748 · 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.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 8 (b) not enough info (c) 80 (d) 16
2. 2.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
3. 3.🧩 Diya bought 4 markers for ₹40 in all. Each marker cost the same. What did one marker cost? (a) ₹40 (b) ₹15 (c) not enough info (d) ₹10
4. 4.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
5. 5.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a rumour (d) a guess
6. 6.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
7. 7.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
8. 8.🥭 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) no, check more (d) yes, mangoes match
9. 9.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 3 PM (d) 5 PM
10. 10.🧩 Nisha bought 3 markers for ₹120 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹120 (c) ₹40 (d) ₹45
11. 11.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
12. 12.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
13. 13.🧩 Nisha bought 5 notebooks for ₹50 in all. Each notebook cost the same. What did one notebook cost? (a) ₹10 (b) ₹50 (c) not enough info (d) ₹15
14. 14.🧩 Ishaan bought 6 notebooks for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹35 (b) ₹180 (c) not enough info (d) ₹30
15. 15.🧩 Aarav is 6 years old. Kabir is older than Aarav. How old is Kabir? (a) 11 (b) 7 (c) 8 (d) not enough info
16. 16.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
17. 17.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
18. 18.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) asking your pet (d) guessing
19. 19.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
20. 20.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) not enough info (b) 6 (c) 12 (d) 60
21. 21.🧩 Meera bought 3 mangoes for ₹60 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) ₹25 (c) not enough info (d) ₹60
22. 22.🧩 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
23. 23.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 10 (b) 5 (c) 50 (d) not enough info
24. 24.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
25. 25.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
26. 26.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
27. 27.🧩 Nisha bought 6 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹20 (b) ₹25 (c) ₹120 (d) not enough info
28. 28.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) to be sure of results (d) for fun only
29. 29.🧩 Ishaan is 12 years old. Aarav is 8 years older than Ishaan. How old is Aarav? (a) 21 (b) 20 (c) not enough info (d) 8
30. 30.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
31. 31.🧩 Tara bought 3 notebooks and a water bottle for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) ₹110 (b) not enough info (c) ₹107 (d) ₹36
32. 32.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
33. 33.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
34. 34.🧩 Rohan is 11 years old. Diya is older than Rohan. How old is Diya? (a) not enough info (b) 12 (c) 16 (d) 13
35. 35.🧩 Meera is 11 years old. Saanvi is older than Meera. How old is Saanvi? (a) 12 (b) 13 (c) 16 (d) not enough info
36. 36.🧩 Diya bought 5 mangoes for ₹275 in all. Each mango cost the same. What did one mango cost? (a) ₹275 (b) ₹60 (c) ₹55 (d) not enough info
37. 37.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
38. 38.🧩 A box has 7 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 72 (b) not enough info (c) 16 (d) 63
39. 39.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
40. 40.🧩 Rohan is 8 years old. Ananya is 5 years older than Rohan. How old is Ananya? (a) 14 (b) 5 (c) not enough info (d) 13

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