Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 959 · 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.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
2. 2.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 16 (b) 8 (c) 80 (d) not enough info
3. 3.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 3 PM
4. 4.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) 7 PM (c) 9 PM (d) not enough info
5. 5.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
6. 6.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
7. 7.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
8. 8.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
9. 9.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 18 (b) not enough info (c) 90 (d) 9
10. 10.🧩 A box has 8 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 32 (b) not enough info (c) 12 (d) 36
11. 11.🧩 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
12. 12.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to waste time (d) to be sure of results
13. 13.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
14. 14.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
15. 15.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
16. 16.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 2 PM (c) 6 PM (d) not enough info
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.🥭 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) no mango is sweet (d) yes, it is certain
19. 19.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 8 PM (c) 5 PM (d) 9 PM
20. 20.🧩 Vihaan bought 3 pens and a bag for ₹215 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹215 (c) ₹71 (d) ₹212
21. 21.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 8 PM
22. 22.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) all dogs are mean (d) that one dog barked
23. 23.🧩 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
24. 24.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 10 (b) 5 (c) 50 (d) not enough info
25. 25.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
26. 26.🧩 Kabir is 8 years old. Nisha is 2 years older than Kabir. How old is Nisha? (a) 11 (b) 10 (c) 2 (d) not enough info
27. 27.🧩 Ishaan is 7 years old. Diya is 2 years older than Ishaan. How old is Diya? (a) 2 (b) 9 (c) 10 (d) not enough info
28. 28.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 6 PM
29. 29.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 7 PM
30. 30.🧩 A box has 4 rows of guavas, with 7 in each row. How many guavas are in the box? (a) not enough info (b) 28 (c) 35 (d) 11
31. 31.🧩 Rohan is 7 years old. Vihaan is 7 years older than Rohan. How old is Vihaan? (a) not enough info (b) 14 (c) 15 (d) 7
32. 32.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a guess (d) a loud opinion
33. 33.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
34. 34.🧩 Kabir is 8 years old. Aarav is 7 years older than Kabir. How old is Aarav? (a) not enough info (b) 16 (c) 15 (d) 7
35. 35.🧩 A box has 6 rows of oranges, with 7 in each row. How many oranges are in the box? (a) 42 (b) not enough info (c) 49 (d) 13
36. 36.🧩 A box has 4 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 16 (c) 20 (d) 8
37. 37.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
38. 38.🧩 Rohan bought 6 pens and a cap for ₹300 in all. Each pen cost the same. What did one pen cost? (a) ₹50 (b) ₹294 (c) ₹300 (d) not enough info
39. 39.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 5 PM
40. 40.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 50 (b) not enough info (c) 10 (d) 5

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