Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 759 · 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.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 5 PM
2. 2.🧩 Meera bought 5 notebooks for ₹200 in all. Each notebook cost the same. What did one notebook cost? (a) ₹45 (b) not enough info (c) ₹40 (d) ₹200
3. 3.🧩 Aarav bought 2 pens and a water bottle for ₹200 in all. Each pen cost the same. What did one pen cost? (a) ₹100 (b) ₹198 (c) not enough info (d) ₹200
4. 4.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
5. 5.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
6. 6.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 16 (b) 8 (c) 80 (d) not enough info
7. 7.🧩 Diya bought 5 markers for ₹275 in all. Each marker cost the same. What did one marker cost? (a) ₹275 (b) not enough info (c) ₹55 (d) ₹60
8. 8.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) that one dog barked (d) never see dogs
9. 9.🧩 Arjun bought 4 markers for ₹80 in all. Each marker cost the same. What did one marker cost? (a) ₹20 (b) not enough info (c) ₹80 (d) ₹25
10. 10.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
11. 11.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a rumour (d) a loud opinion
12. 12.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) not enough info (c) 4 PM (d) 6 PM
13. 13.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
14. 14.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
15. 15.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 5 PM (c) not enough info (d) 6 PM
16. 16.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
17. 17.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
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.🧩 A box has 7 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 28 (b) not enough info (c) 11 (d) 32
20. 20.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
21. 21.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
22. 22.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 90 (b) not enough info (c) 9 (d) 18
23. 23.🧩 A box has 7 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 72 (b) 16 (c) not enough info (d) 63
24. 24.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 9 PM (b) 8 PM (c) 6 PM (d) not enough info
25. 25.🧩 A box has 4 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 45 (b) not enough info (c) 13 (d) 36
26. 26.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
27. 27.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 7 (b) 14 (c) not enough info (d) 70
28. 28.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
29. 29.🧩 Ishaan is 8 years old. Tara is 3 years older than Ishaan. How old is Tara? (a) not enough info (b) 3 (c) 12 (d) 11
30. 30.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
31. 31.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking your pet (d) asking one friend
32. 32.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
33. 33.🧩 Nisha bought 2 balls and a water bottle for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) ₹120 (c) not enough info (d) ₹118
34. 34.🧩 A box has 5 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 24 (b) not enough info (c) 9 (d) 20
35. 35.🧩 Rohan bought 2 markers and a water bottle for ₹180 in all. Each marker cost the same. What did one marker cost? (a) ₹90 (b) not enough info (c) ₹180 (d) ₹178
36. 36.🧩 Meera bought 2 mangoes and a water bottle for ₹150 in all. Each mango cost the same. What did one mango cost? (a) ₹150 (b) not enough info (c) ₹148 (d) ₹75
37. 37.🧩 Saanvi is 7 years old. Arjun is 9 years older than Saanvi. How old is Arjun? (a) 16 (b) 9 (c) not enough info (d) 17
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.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
40. 40.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 8 PM (c) not enough info (d) 7 PM

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