Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 357 · 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.🧩 Nisha bought 6 notebooks for ₹240 in all. Each notebook cost the same. What did one notebook cost? (a) ₹45 (b) ₹40 (c) ₹240 (d) not enough info
2. 2.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 50 (b) 5 (c) 10 (d) not enough info
3. 3.🧩 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
4. 4.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
5. 5.🧩 Ananya bought 5 kites for ₹100 in all. Each kite cost the same. What did one kite cost? (a) ₹100 (b) not enough info (c) ₹25 (d) ₹20
6. 6.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
7. 7.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) asking one friend (d) guessing
8. 8.🧩 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
9. 9.🧩 Saanvi is 6 years old. Nisha is older than Saanvi. How old is Nisha? (a) 11 (b) 7 (c) 8 (d) not enough info
10. 10.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
11. 11.🧩 Meera bought 2 notebooks for ₹20 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) not enough info (c) ₹10 (d) ₹15
12. 12.🧩 Vihaan bought 6 mangoes and a bag for ₹130 in all. Each mango cost the same. What did one mango cost? (a) ₹130 (b) not enough info (c) ₹21 (d) ₹124
13. 13.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 4 PM (c) 3 PM (d) not enough info
14. 14.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
15. 15.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
16. 16.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) not enough info (c) 6 PM (d) 7 PM
17. 17.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
18. 18.🧩 A box has 7 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 56 (b) not enough info (c) 14 (d) 49
19. 19.🧩 Ishaan is 7 years old. Nisha is older than Ishaan. How old is Nisha? (a) 9 (b) 8 (c) not enough info (d) 12
20. 20.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
21. 21.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 8 PM (d) 6 PM
22. 22.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) 6 PM (c) not enough info (d) 7 PM
23. 23.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 4 PM (c) 2 PM (d) not enough info
24. 24.🧩 Ishaan is 8 years old. Saanvi is older than Ishaan. How old is Saanvi? (a) 10 (b) 9 (c) 13 (d) not enough info
25. 25.🧩 Kabir is 6 years old. Saanvi is 9 years older than Kabir. How old is Saanvi? (a) 15 (b) 9 (c) 16 (d) not enough info
26. 26.🧩 Diya bought 5 pens and a cap for ₹175 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) ₹170 (c) not enough info (d) ₹175
27. 27.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
28. 28.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) to change answers (d) for fun only
29. 29.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
30. 30.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) not enough info (b) 8 (c) 4 (d) 40
31. 31.🧩 Ananya bought 6 mangoes and a bag for ₹160 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹160 (c) ₹154 (d) ₹26
32. 32.🧩 Kabir bought 2 pens and a cap for ₹170 in all. Each pen cost the same. What did one pen cost? (a) ₹170 (b) ₹85 (c) ₹168 (d) not enough info
33. 33.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
34. 34.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
35. 35.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
36. 36.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) that one dog barked (d) all dogs are mean
37. 37.🧩 Diya bought 5 kites for ₹200 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) ₹200 (c) ₹45 (d) not enough info
38. 38.🧩 Kabir bought 2 kites and a bag for ₹70 in all. Each kite cost the same. What did one kite cost? (a) ₹68 (b) ₹35 (c) ₹70 (d) not enough info
39. 39.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 50 (b) not enough info (c) 5 (d) 10
40. 40.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

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