Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 197 · 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.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) that one dog barked (d) never see dogs
2. 2.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 5 (b) 10 (c) not enough info (d) 50
3. 3.🧩 Ananya bought 3 kites for ₹45 in all. Each kite cost the same. What did one kite cost? (a) ₹20 (b) ₹45 (c) not enough info (d) ₹15
4. 4.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
5. 5.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
6. 6.🧩 A box has 4 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 24 (b) 10 (c) not enough info (d) 30
7. 7.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 7 PM
8. 8.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 6 PM (c) 7 PM (d) not enough info
9. 9.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
10. 10.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
11. 11.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
12. 12.🧩 Diya is 7 years old. Aarav is older than Diya. How old is Aarav? (a) 9 (b) not enough info (c) 8 (d) 12
13. 13.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 7 PM (d) 6 PM
14. 14.🧩 A box has 7 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 35 (b) 40 (c) 12 (d) not enough info
15. 15.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
16. 16.🧩 Tara bought 5 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹20 (c) ₹100 (d) ₹25
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) False (b) True
18. 18.🧩 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
19. 19.🧩 Aarav bought 3 kites for ₹75 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) ₹25 (c) not enough info (d) ₹75
20. 20.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
21. 21.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
22. 22.🧩 Rohan bought 4 markers for ₹120 in all. Each marker cost the same. What did one marker cost? (a) ₹120 (b) ₹35 (c) ₹30 (d) not enough info
23. 23.🧩 Diya is 12 years old. Nisha is 5 years older than Diya. How old is Nisha? (a) 17 (b) 18 (c) not enough info (d) 5
24. 24.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
25. 25.🧩 A box has 3 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 24 (b) not enough info (c) 18 (d) 9
26. 26.🧩 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
27. 27.🧩 Saanvi bought 4 markers for ₹40 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹15 (c) ₹10 (d) ₹40
28. 28.🧩 A box has 4 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 16 (b) 8 (c) not enough info (d) 20
29. 29.🧩 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
30. 30.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 40 (b) not enough info (c) 8 (d) 4
31. 31.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
32. 32.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
33. 33.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 3 PM
34. 34.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
35. 35.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info
36. 36.🧩 Ishaan is 7 years old. Kabir is older than Ishaan. How old is Kabir? (a) not enough info (b) 12 (c) 9 (d) 8
37. 37.🧩 Ananya bought 4 pens for ₹140 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) not enough info (c) ₹140 (d) ₹40
38. 38.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
39. 39.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
40. 40.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) 2 PM (d) not enough info

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