Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 757 · 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) never see dogs (b) all dogs are mean (c) that one dog barked (d) dogs hate you
2. 2.🧩 Aarav bought 4 balls for ₹40 in all. Each ball cost the same. What did one ball cost? (a) ₹10 (b) ₹15 (c) ₹40 (d) not enough info
3. 3.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 3 PM (d) 5 PM
4. 4.🧩 Kabir is 12 years old. Diya is older than Kabir. How old is Diya? (a) 17 (b) 14 (c) not enough info (d) 13
5. 5.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
6. 6.🧩 Meera is 10 years old. Diya is 9 years older than Meera. How old is Diya? (a) 20 (b) not enough info (c) 19 (d) 9
7. 7.🧩 Kabir bought 3 kites for ₹30 in all. Each kite cost the same. What did one kite cost? (a) ₹15 (b) ₹10 (c) ₹30 (d) not enough info
8. 8.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) no mango is sweet (c) no, check more (d) yes, mangoes match
9. 9.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
10. 10.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
11. 11.🧩 A box has 3 rows of eggs, with 7 in each row. How many eggs are in the box? (a) not enough info (b) 28 (c) 10 (d) 21
12. 12.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
13. 13.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
14. 14.🧩 Vihaan bought 2 balls and a water bottle for ₹80 in all. Each ball cost the same. What did one ball cost? (a) ₹40 (b) ₹78 (c) ₹80 (d) not enough info
15. 15.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
16. 16.🧩 Nisha bought 4 pens and a cap for ₹240 in all. Each pen cost the same. What did one pen cost? (a) ₹236 (b) not enough info (c) ₹60 (d) ₹240
17. 17.📊 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
18. 18.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
19. 19.🧩 Ananya bought 2 mangoes for ₹40 in all. Each mango cost the same. What did one mango cost? (a) ₹20 (b) not enough info (c) ₹40 (d) ₹25
20. 20.🧩 Arjun is 12 years old. Tara is 3 years older than Arjun. How old is Tara? (a) 15 (b) 16 (c) not enough info (d) 3
21. 21.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
22. 22.🧩 Aarav is 12 years old. Arjun is older than Aarav. How old is Arjun? (a) 14 (b) not enough info (c) 13 (d) 17
23. 23.🧩 Diya bought 6 mangoes and a water bottle for ₹170 in all. Each mango cost the same. What did one mango cost? (a) ₹170 (b) ₹164 (c) ₹28 (d) not enough info
24. 24.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
25. 25.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) to change answers (d) for fun only
26. 26.🧩 Nisha is 6 years old. Diya is 5 years older than Nisha. How old is Diya? (a) 12 (b) 5 (c) not enough info (d) 11
27. 27.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
28. 28.🧩 Meera bought 6 notebooks for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) not enough info (c) ₹120 (d) ₹20
29. 29.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
30. 30.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 9 PM
31. 31.🧩 A box has 8 rows of oranges, with 8 in each row. How many oranges are in the box? (a) not enough info (b) 72 (c) 64 (d) 16
32. 32.🧩 Tara bought 2 notebooks for ₹20 in all. Each notebook cost the same. What did one notebook cost? (a) ₹15 (b) not enough info (c) ₹20 (d) ₹10
33. 33.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 6 PM (d) not enough info
34. 34.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
35. 35.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
36. 36.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
37. 37.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 16 (b) not enough info (c) 8 (d) 80
38. 38.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
39. 39.🧩 Aarav bought 5 notebooks for ₹50 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) ₹10 (c) not enough info (d) ₹15
40. 40.🧩 Ishaan is 6 years old. Kabir is older than Ishaan. How old is Kabir? (a) 11 (b) 8 (c) 7 (d) not enough info

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