Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 343 · 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 asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
2. 2.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 2 PM (c) 5 PM (d) not enough info
3. 3.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
4. 4.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 9 PM (d) 7 PM
5. 5.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
6. 6.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
7. 7.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to be sure of results (d) to waste time
8. 8.🧩 A box has 5 rows of guavas, with 4 in each row. How many guavas are in the box? (a) 20 (b) 24 (c) 9 (d) not enough info
9. 9.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 7 PM (c) 6 PM (d) not enough info
10. 10.🧩 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
11. 11.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 5 PM
12. 12.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 8 PM (d) 7 PM
13. 13.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
14. 14.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
15. 15.🧩 Diya bought 6 balls and a cap for ₹250 in all. Each ball cost the same. What did one ball cost? (a) ₹41 (b) ₹244 (c) ₹250 (d) not enough info
16. 16.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
17. 17.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) not enough info (c) 7 PM (d) 6 PM
18. 18.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 5 PM (c) 6 PM (d) not enough info
19. 19.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
20. 20.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
21. 21.🧩 Ishaan is 9 years old. Meera is 8 years older than Ishaan. How old is Meera? (a) 8 (b) 17 (c) not enough info (d) 18
22. 22.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Rohan bought 6 pens for ₹240 in all. Each pen cost the same. What did one pen cost? (a) ₹240 (b) ₹45 (c) ₹40 (d) not enough info
24. 24.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no mango is sweet (d) no, check more
25. 25.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
26. 26.🧩 Aarav bought 2 balls for ₹40 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹20 (c) ₹25 (d) ₹40
27. 27.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
28. 28.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
29. 29.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
30. 30.🧩 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
31. 31.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
32. 32.🧩 Aarav bought 6 mangoes and a water bottle for ₹300 in all. Each mango cost the same. What did one mango cost? (a) ₹300 (b) ₹294 (c) ₹50 (d) not enough info
33. 33.🧩 Tara is 10 years old. Vihaan is 3 years older than Tara. How old is Vihaan? (a) 13 (b) not enough info (c) 14 (d) 3
34. 34.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
35. 35.🧩 A box has 4 rows of apples, with 4 in each row. How many apples are in the box? (a) not enough info (b) 20 (c) 8 (d) 16
36. 36.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) not enough info (c) 4 PM (d) 6 PM
37. 37.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a rumour (d) a guess
38. 38.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
39. 39.🧩 Kabir is 9 years old. Ananya is older than Kabir. How old is Ananya? (a) not enough info (b) 10 (c) 14 (d) 11
40. 40.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True

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