Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 100 · 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. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 6 PM
2. 2.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
3. 3.🧩 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
4. 4.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 7 PM (c) 5 PM (d) 6 PM
5. 5.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) 6 PM (d) not enough info
6. 6.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) not enough info (b) 4 (c) 40 (d) 8
7. 7.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) all dogs are mean (d) never see dogs
8. 8.🧩 A box has 7 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 56 (b) 14 (c) not enough info (d) 49
9. 9.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
10. 10.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
11. 11.🧩 Ishaan is 10 years old. Nisha is older than Ishaan. How old is Nisha? (a) 12 (b) 11 (c) 15 (d) not enough info
12. 12.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
13. 13.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 5 PM (c) 2 PM (d) not enough info
14. 14.🧩 Ishaan bought 6 markers and a cap for ₹440 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹440 (c) ₹73 (d) ₹434
15. 15.🧩 Rohan is 12 years old. Meera is 3 years older than Rohan. How old is Meera? (a) not enough info (b) 15 (c) 16 (d) 3
16. 16.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) asking your pet (d) guessing
17. 17.🧩 A box has 7 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 28 (b) 32 (c) 11 (d) not enough info
18. 18.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
19. 19.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
20. 20.🧩 Nisha is 6 years old. Vihaan is 9 years older than Nisha. How old is Vihaan? (a) 16 (b) not enough info (c) 15 (d) 9
21. 21.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
22. 22.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 3 PM (c) 4 PM (d) 5 PM
23. 23.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
24. 24.🧩 Rohan is 12 years old. Vihaan is 2 years older than Rohan. How old is Vihaan? (a) 15 (b) 14 (c) not enough info (d) 2
25. 25.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Saanvi bought 2 pens for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹80 (b) not enough info (c) ₹40 (d) ₹45
27. 27.🧩 Diya bought 2 mangoes for ₹20 in all. Each mango cost the same. What did one mango cost? (a) ₹15 (b) ₹10 (c) not enough info (d) ₹20
28. 28.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
29. 29.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 50 (b) not enough info (c) 10 (d) 5
30. 30.🧩 Meera is 7 years old. Ishaan is 6 years older than Meera. How old is Ishaan? (a) 6 (b) 14 (c) 13 (d) not enough info
31. 31.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
32. 32.🧩 Nisha is 8 years old. Saanvi is 2 years older than Nisha. How old is Saanvi? (a) 2 (b) 11 (c) 10 (d) not enough info
33. 33.🧩 Rohan bought 3 balls for ₹135 in all. Each ball cost the same. What did one ball cost? (a) ₹135 (b) ₹45 (c) ₹50 (d) not enough info
34. 34.🧩 A box has 7 rows of apples, with 6 in each row. How many apples are in the box? (a) not enough info (b) 13 (c) 48 (d) 42
35. 35.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
36. 36.🧩 Aarav is 12 years old. Meera is older than Aarav. How old is Meera? (a) 14 (b) 17 (c) 13 (d) not enough info
37. 37.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
38. 38.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 4 PM (d) 5 PM
39. 39.🥭 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) no, check more (c) yes, it is certain (d) no mango is sweet
40. 40.🧩 Nisha bought 3 balls and a lunch box for ₹220 in all. Each ball cost the same. What did one ball cost? (a) ₹220 (b) not enough info (c) ₹73 (d) ₹217

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