Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 677 · 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 apples has 6 in each row. How many apples are in the box? (a) 12 (b) not enough info (c) 6 (d) 60
2. 2.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
3. 3.🧩 Meera bought 4 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) ₹15 (b) ₹60 (c) ₹20 (d) not enough info
4. 4.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) no mango is sweet (c) yes, mangoes match (d) yes, it is certain
5. 5.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking your pet (d) asking one friend
7. 7.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
8. 8.🧩 Ishaan bought 3 mangoes and a water bottle for ₹125 in all. Each mango cost the same. What did one mango cost? (a) ₹122 (b) ₹125 (c) not enough info (d) ₹41
9. 9.🧩 Aarav is 11 years old. Vihaan is older than Aarav. How old is Vihaan? (a) not enough info (b) 16 (c) 13 (d) 12
10. 10.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
11. 11.🧩 Kabir is 10 years old. Diya is 4 years older than Kabir. How old is Diya? (a) 15 (b) 14 (c) 4 (d) not enough info
12. 12.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 12 (b) 60 (c) 6 (d) not enough info
13. 13.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
14. 14.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 10 (b) not enough info (c) 50 (d) 5
15. 15.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
16. 16.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 2 PM (c) not enough info (d) 4 PM
17. 17.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
18. 18.🧩 Vihaan is 6 years old. Rohan is 4 years older than Vihaan. How old is Rohan? (a) 10 (b) 4 (c) not enough info (d) 11
19. 19.🧩 Diya is 11 years old. Rohan is older than Diya. How old is Rohan? (a) 12 (b) 16 (c) 13 (d) not enough info
20. 20.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 3 PM (c) 4 PM (d) not enough info
21. 21.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
22. 22.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
23. 23.🧩 Nisha is 6 years old. Saanvi is older than Nisha. How old is Saanvi? (a) 8 (b) 11 (c) 7 (d) not enough info
24. 24.🧩 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
25. 25.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
26. 26.🧩 A box has 5 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 14 (b) 45 (c) not enough info (d) 54
27. 27.🧩 Kabir bought 6 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹150 (c) ₹25 (d) ₹30
28. 28.🧩 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
29. 29.🧩 Aarav is 6 years old. Kabir is 5 years older than Aarav. How old is Kabir? (a) not enough info (b) 5 (c) 12 (d) 11
30. 30.🧩 Kabir bought 4 balls and a water bottle for ₹240 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) ₹236 (c) not enough info (d) ₹240
31. 31.🧩 Arjun bought 4 pens for ₹160 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) ₹45 (c) not enough info (d) ₹160
32. 32.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
33. 33.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to waste time (c) to change answers (d) to be sure of results
34. 34.🧩 Diya bought 2 pens and a water bottle for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹90 (b) ₹88 (c) ₹45 (d) not enough info
35. 35.🧩 Aarav is 8 years old. Ananya is older than Aarav. How old is Ananya? (a) 10 (b) 9 (c) 13 (d) not enough info
36. 36.🧩 Rohan is 9 years old. Diya is 9 years older than Rohan. How old is Diya? (a) not enough info (b) 18 (c) 9 (d) 19
37. 37.🧩 Tara bought 3 mangoes for ₹75 in all. Each mango cost the same. What did one mango cost? (a) ₹75 (b) ₹25 (c) not enough info (d) ₹30
38. 38.🧩 Diya is 12 years old. Rohan is older than Diya. How old is Rohan? (a) 13 (b) not enough info (c) 14 (d) 17
39. 39.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
40. 40.🧩 Meera bought 3 mangoes and a water bottle for ₹100 in all. Each mango cost the same. What did one mango cost? (a) ₹33 (b) not enough info (c) ₹100 (d) ₹97

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