Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 530 · 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) guessing (b) asking one friend (c) asking the whole class (d) asking your pet
2. 2.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 2 PM (d) 5 PM
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.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) yes, it is certain (c) no mango is sweet (d) no, check more
5. 5.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
6. 6.🧩 Tara is 6 years old. Rohan is 3 years older than Tara. How old is Rohan? (a) 3 (b) 10 (c) not enough info (d) 9
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.🧩 Ananya is 9 years old. Vihaan is 2 years older than Ananya. How old is Vihaan? (a) 12 (b) not enough info (c) 2 (d) 11
9. 9.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 8 PM (c) 7 PM (d) 6 PM
10. 10.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
11. 11.🧩 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
12. 12.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to waste time (d) to be sure of results
13. 13.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
14. 14.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 3 PM (d) 5 PM
15. 15.🧩 Rohan bought 4 mangoes for ₹80 in all. Each mango cost the same. What did one mango cost? (a) ₹25 (b) not enough info (c) ₹80 (d) ₹20
16. 16.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 5 PM (c) 4 PM (d) not enough info
17. 17.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a rumour (d) a loud opinion
18. 18.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
19. 19.🧩 A box has 7 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 16 (b) not enough info (c) 72 (d) 63
20. 20.🧩 A box has 8 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 54 (b) 48 (c) 14 (d) not enough info
21. 21.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
22. 22.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) 7 PM (c) 6 PM (d) not enough info
23. 23.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
24. 24.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 6 PM
25. 25.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Ishaan bought 6 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹15 (c) ₹60 (d) ₹10
27. 27.🧩 Diya bought 3 mangoes and a bag for ₹225 in all. Each mango cost the same. What did one mango cost? (a) ₹222 (b) ₹225 (c) not enough info (d) ₹75
28. 28.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 5 (b) not enough info (c) 50 (d) 10
29. 29.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
30. 30.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
31. 31.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
32. 32.🧩 Saanvi is 9 years old. Arjun is older than Saanvi. How old is Arjun? (a) 11 (b) not enough info (c) 14 (d) 10
33. 33.🧩 A box has 8 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 17 (b) 72 (c) 81 (d) not enough info
34. 34.🧩 Diya bought 3 balls and a bag for ₹130 in all. Each ball cost the same. What did one ball cost? (a) ₹127 (b) ₹43 (c) not enough info (d) ₹130
35. 35.🧩 Ishaan bought 2 balls and a lunch box for ₹170 in all. Each ball cost the same. What did one ball cost? (a) ₹168 (b) not enough info (c) ₹85 (d) ₹170
36. 36.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 5 PM (c) not enough info (d) 6 PM
37. 37.🧩 Saanvi is 10 years old. Ananya is 3 years older than Saanvi. How old is Ananya? (a) 13 (b) 14 (c) 3 (d) not enough info
38. 38.🧩 Vihaan bought 2 pens for ₹20 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) ₹15 (c) not enough info (d) ₹10
39. 39.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
40. 40.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

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