Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 618 · 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.🧩 Kabir is 7 years old. Nisha is older than Kabir. How old is Nisha? (a) not enough info (b) 12 (c) 9 (d) 8
2. 2.🧩 Tara is 12 years old. Ananya is 3 years older than Tara. How old is Ananya? (a) 16 (b) not enough info (c) 3 (d) 15
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
4. 4.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
5. 5.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
6. 6.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
7. 7.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) 4 PM (c) not enough info (d) 5 PM
8. 8.🧩 Kabir is 11 years old. Arjun is older than Kabir. How old is Arjun? (a) 12 (b) not enough info (c) 13 (d) 16
9. 9.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
10. 10.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to waste time (d) to be sure of results
11. 11.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 7 PM
12. 12.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
13. 13.🧩 Kabir bought 6 pens and a water bottle for ₹170 in all. Each pen cost the same. What did one pen cost? (a) ₹28 (b) ₹170 (c) ₹164 (d) not enough info
14. 14.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 5 (b) 10 (c) 50 (d) not enough info
15. 15.🧩 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
16. 16.🧩 A box has 6 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 42 (b) 49 (c) not enough info (d) 13
17. 17.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
18. 18.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
19. 19.🧩 Kabir is 9 years old. Vihaan is 8 years older than Kabir. How old is Vihaan? (a) 17 (b) not enough info (c) 8 (d) 18
20. 20.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
21. 21.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a loud opinion (d) a rumour
22. 22.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking one friend (d) asking your pet
23. 23.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
24. 24.🧩 A box has 6 rows of apples, with 9 in each row. How many apples are in the box? (a) 63 (b) not enough info (c) 15 (d) 54
25. 25.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) not enough info (c) 7 PM (d) 6 PM
26. 26.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
27. 27.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 4 PM (d) 7 PM
28. 28.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
29. 29.🥭 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
30. 30.🧩 Ananya bought 2 kites and a water bottle for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹140 (b) not enough info (c) ₹70 (d) ₹138
31. 31.🧩 Diya bought 4 balls and a cap for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹15 (b) ₹60 (c) not enough info (d) ₹56
32. 32.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 8 (b) not enough info (c) 16 (d) 80
33. 33.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 8 PM (c) not enough info (d) 7 PM
34. 34.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
35. 35.🧩 Saanvi is 6 years old. Vihaan is 6 years older than Saanvi. How old is Vihaan? (a) not enough info (b) 12 (c) 13 (d) 6
36. 36.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) that one dog barked (d) all dogs are mean
37. 37.🧩 A box has 5 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 9 (b) 20 (c) 24 (d) not enough info
38. 38.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 3 PM (c) 6 PM (d) 5 PM
39. 39.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) not enough info (d) 2 PM
40. 40.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True

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