Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 348 · 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.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
2. 2.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 6 PM
3. 3.🧩 Rohan bought 5 kites for ₹50 in all. Each kite cost the same. What did one kite cost? (a) ₹50 (b) ₹10 (c) ₹15 (d) not enough info
4. 4.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
5. 5.🧩 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
6. 6.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 60 (b) 6 (c) 12 (d) not enough info
7. 7.🧩 Meera is 7 years old. Rohan is older than Meera. How old is Rohan? (a) 8 (b) not enough info (c) 9 (d) 12
8. 8.📊 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
9. 9.🧩 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
10. 10.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the colour of ink (d) the page number
11. 11.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
12. 12.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 6 PM
13. 13.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 4 PM
14. 14.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
15. 15.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
16. 16.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
17. 17.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
18. 18.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
19. 19.🧩 Aarav bought 5 kites and a water bottle for ₹330 in all. Each kite cost the same. What did one kite cost? (a) ₹325 (b) not enough info (c) ₹330 (d) ₹66
20. 20.🧩 Meera bought 2 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) ₹30 (c) ₹35 (d) not enough info
21. 21.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
22. 22.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
23. 23.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
24. 24.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
25. 25.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) never see dogs (d) that one dog barked
26. 26.🧩 Ananya is 12 years old. Kabir is older than Ananya. How old is Kabir? (a) 14 (b) not enough info (c) 17 (d) 13
27. 27.🧩 Aarav is 10 years old. Saanvi is 6 years older than Aarav. How old is Saanvi? (a) 6 (b) not enough info (c) 16 (d) 17
28. 28.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
29. 29.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, mangoes match (c) no, check more (d) yes, it is certain
30. 30.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
31. 31.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 7 PM
32. 32.🧩 Nisha bought 6 kites for ₹270 in all. Each kite cost the same. What did one kite cost? (a) ₹270 (b) not enough info (c) ₹45 (d) ₹50
33. 33.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
34. 34.🧩 Tara is 8 years old. Meera is older than Tara. How old is Meera? (a) not enough info (b) 10 (c) 13 (d) 9
35. 35.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
36. 36.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 70 (b) 14 (c) 7 (d) not enough info
37. 37.🧩 Kabir is 7 years old. Nisha is older than Kabir. How old is Nisha? (a) 12 (b) not enough info (c) 8 (d) 9
38. 38.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 8 PM (d) 9 PM
39. 39.🧩 Saanvi is 11 years old. Ishaan is older than Saanvi. How old is Ishaan? (a) 12 (b) not enough info (c) 16 (d) 13
40. 40.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

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