Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 180 · 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) enough evidence (b) not enough evidence
2. 2.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
3. 3.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) all dogs are mean (d) dogs hate you
4. 4.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
5. 5.🧩 Rohan bought 2 markers and a bag for ₹130 in all. Each marker cost the same. What did one marker cost? (a) ₹130 (b) ₹65 (c) ₹128 (d) not enough info
6. 6.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 5 PM
7. 7.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) not enough info (b) 16 (c) 80 (d) 8
8. 8.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
9. 9.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
10. 10.🧩 Ishaan is 11 years old. Aarav is 4 years older than Ishaan. How old is Aarav? (a) not enough info (b) 4 (c) 16 (d) 15
11. 11.🧩 Meera bought 4 balls for ₹40 in all. Each ball cost the same. What did one ball cost? (a) ₹15 (b) ₹10 (c) ₹40 (d) not enough info
12. 12.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) for fun only (d) to waste time
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.🧩 Meera bought 4 balls for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹180 (b) ₹45 (c) ₹50 (d) not enough info
15. 15.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
16. 16.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
17. 17.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
18. 18.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 50 (b) 10 (c) not enough info (d) 5
19. 19.🧩 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
20. 20.🧩 A box has 3 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 7 (b) 16 (c) 12 (d) not enough info
21. 21.🧩 Diya bought 5 notebooks and a cap for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) ₹110 (b) not enough info (c) ₹22 (d) ₹105
22. 22.🧩 Rohan bought 6 notebooks for ₹240 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) ₹45 (c) ₹240 (d) not enough info
23. 23.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
24. 24.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
25. 25.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the colour of ink (d) the page number
26. 26.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 7 PM (d) 8 PM
27. 27.🧩 A box has 3 rows of laddoos, with 7 in each row. How many laddoos are in the box? (a) 28 (b) 10 (c) not enough info (d) 21
28. 28.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
29. 29.🧩 Meera is 6 years old. Tara is 2 years older than Meera. How old is Tara? (a) 8 (b) 9 (c) 2 (d) not enough info
30. 30.🧩 A box has 7 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 32 (c) 11 (d) 28
31. 31.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 6 PM
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.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) not enough info (b) 4 (c) 40 (d) 8
34. 34.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
35. 35.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 2 PM (c) not enough info (d) 5 PM
36. 36.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
37. 37.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
38. 38.🧩 Tara is 7 years old. Kabir is 3 years older than Tara. How old is Kabir? (a) 11 (b) 3 (c) not enough info (d) 10
39. 39.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 2 PM (c) not enough info (d) 4 PM
40. 40.🧩 Meera bought 2 notebooks and a bag for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹45 (b) not enough info (c) ₹88 (d) ₹90

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