Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 579 · 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? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
2. 2.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
3. 3.🧩 Nisha bought 4 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) ₹100 (c) ₹25 (d) not enough info
4. 4.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) not enough info (c) 4 PM (d) 5 PM
5. 5.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
6. 6.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
7. 7.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 5 PM (d) not enough info
8. 8.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
9. 9.🧩 Kabir bought 6 markers for ₹180 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹30 (c) ₹180 (d) ₹35
10. 10.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
11. 11.🧩 Kabir is 6 years old. Ananya is older than Kabir. How old is Ananya? (a) 7 (b) 11 (c) 8 (d) not enough info
12. 12.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
13. 13.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 90 (b) not enough info (c) 9 (d) 18
14. 14.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking your pet (d) asking one friend
15. 15.🧩 Rohan is 6 years old. Kabir is 4 years older than Rohan. How old is Kabir? (a) not enough info (b) 4 (c) 11 (d) 10
16. 16.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
17. 17.🧩 Diya bought 3 balls and a lunch box for ₹150 in all. Each ball cost the same. What did one ball cost? (a) ₹150 (b) ₹147 (c) not enough info (d) ₹50
18. 18.🧩 Meera bought 3 balls for ₹45 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹45 (c) ₹20 (d) ₹15
19. 19.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
21. 21.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
22. 22.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) never see dogs (d) that one dog barked
23. 23.🧩 Ananya bought 3 mangoes and a lunch box for ₹115 in all. Each mango cost the same. What did one mango cost? (a) ₹115 (b) ₹112 (c) ₹38 (d) not enough info
24. 24.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
25. 25.🧩 Arjun bought 5 markers and a bag for ₹70 in all. Each marker cost the same. What did one marker cost? (a) ₹65 (b) ₹14 (c) not enough info (d) ₹70
26. 26.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
27. 27.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
28. 28.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 5 PM (c) 8 PM (d) not enough info
29. 29.🧩 Rohan bought 6 balls for ₹240 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) ₹40 (c) ₹240 (d) not enough info
30. 30.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
31. 31.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
32. 32.🧩 Ishaan bought 3 pens for ₹105 in all. Each pen cost the same. What did one pen cost? (a) ₹105 (b) ₹35 (c) ₹40 (d) not enough info
33. 33.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
34. 34.🧩 Tara bought 2 kites and a bag for ₹170 in all. Each kite cost the same. What did one kite cost? (a) ₹85 (b) ₹168 (c) not enough info (d) ₹170
35. 35.🧩 Vihaan bought 2 markers for ₹110 in all. Each marker cost the same. What did one marker cost? (a) ₹55 (b) ₹60 (c) not enough info (d) ₹110
36. 36.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
37. 37.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
38. 38.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
39. 39.🧩 Vihaan bought 2 markers and a lunch box for ₹130 in all. Each marker cost the same. What did one marker cost? (a) ₹130 (b) not enough info (c) ₹128 (d) ₹65
40. 40.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence

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