Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 484 · 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.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
2. 2.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a guess (d) a loud opinion
3. 3.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 9 (b) 18 (c) 90 (d) not enough info
4. 4.🧩 A box has 4 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) not enough info (b) 13 (c) 36 (d) 45
5. 5.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) asking the whole class (d) guessing
7. 7.🧩 Meera is 8 years old. Rohan is 9 years older than Meera. How old is Rohan? (a) 17 (b) not enough info (c) 9 (d) 18
8. 8.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
9. 9.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 9 PM (c) 7 PM (d) 8 PM
10. 10.🧩 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
11. 11.🥭 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, mangoes match (c) yes, it is certain (d) no, check more
12. 12.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
13. 13.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 7 PM
14. 14.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
15. 15.🧩 Ananya is 11 years old. Nisha is older than Ananya. How old is Nisha? (a) 13 (b) 12 (c) not enough info (d) 16
16. 16.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 4 PM
17. 17.🧩 Rohan is 6 years old. Ishaan is older than Rohan. How old is Ishaan? (a) 7 (b) 11 (c) 8 (d) not enough info
18. 18.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
19. 19.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
20. 20.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
21. 21.🧩 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
22. 22.🧩 Kabir bought 4 notebooks and a lunch box for ₹250 in all. Each notebook cost the same. What did one notebook cost? (a) ₹246 (b) not enough info (c) ₹250 (d) ₹62
23. 23.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
24. 24.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
25. 25.🧩 Meera is 11 years old. Saanvi is 2 years older than Meera. How old is Saanvi? (a) 14 (b) 2 (c) not enough info (d) 13
26. 26.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to waste time (d) to be sure of results
27. 27.🧩 Meera bought 6 markers and a lunch box for ₹190 in all. Each marker cost the same. What did one marker cost? (a) ₹31 (b) ₹184 (c) ₹190 (d) not enough info
28. 28.🧩 Saanvi is 12 years old. Diya is 3 years older than Saanvi. How old is Diya? (a) 15 (b) 16 (c) not enough info (d) 3
29. 29.🧩 A box has 3 rows of apples, with 7 in each row. How many apples are in the box? (a) not enough info (b) 21 (c) 10 (d) 28
30. 30.🧩 Kabir is 10 years old. Arjun is 2 years older than Kabir. How old is Arjun? (a) 13 (b) 2 (c) not enough info (d) 12
31. 31.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
32. 32.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
33. 33.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
34. 34.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 6 PM (c) 5 PM (d) not enough info
35. 35.🧩 Arjun bought 6 notebooks for ₹240 in all. Each notebook cost the same. What did one notebook cost? (a) ₹45 (b) ₹240 (c) not enough info (d) ₹40
36. 36.🧩 A box has 3 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 16 (b) not enough info (c) 12 (d) 7
37. 37.🧩 Diya bought 2 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹35 (b) ₹60 (c) ₹30 (d) not enough info
38. 38.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
39. 39.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
40. 40.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True

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