Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 798 · 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.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
2. 2.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Rohan is 6 years old. Diya is older than Rohan. How old is Diya? (a) 7 (b) not enough info (c) 11 (d) 8
5. 5.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
6. 6.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
7. 7.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
8. 8.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
9. 9.🧩 Nisha bought 6 kites and a water bottle for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹25 (b) not enough info (c) ₹150 (d) ₹144
10. 10.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
11. 11.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 9 (b) 90 (c) not enough info (d) 18
12. 12.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
13. 13.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) for fun only (d) to be sure of results
14. 14.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 4 PM (d) 3 PM
15. 15.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
16. 16.🧩 Aarav bought 6 pens for ₹240 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) ₹240 (c) ₹45 (d) not enough info
17. 17.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
18. 18.🧩 Diya bought 4 balls for ₹240 in all. Each ball cost the same. What did one ball cost? (a) ₹240 (b) ₹60 (c) not enough info (d) ₹65
19. 19.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
20. 20.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
21. 21.🧩 Nisha is 8 years old. Kabir is 3 years older than Nisha. How old is Kabir? (a) 3 (b) 11 (c) not enough info (d) 12
22. 22.🧩 Ananya is 7 years old. Diya is 5 years older than Ananya. How old is Diya? (a) 13 (b) 5 (c) 12 (d) not enough info
23. 23.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 8 PM
24. 24.🧩 Saanvi is 10 years old. Arjun is 6 years older than Saanvi. How old is Arjun? (a) 17 (b) 6 (c) 16 (d) not enough info
25. 25.🧩 Meera is 10 years old. Saanvi is 8 years older than Meera. How old is Saanvi? (a) 19 (b) not enough info (c) 8 (d) 18
26. 26.🧩 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
27. 27.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) all dogs are mean (d) never see dogs
28. 28.🧩 Ananya bought 4 notebooks and a lunch box for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) ₹37 (b) ₹150 (c) not enough info (d) ₹146
29. 29.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 5 PM (c) not enough info (d) 4 PM
30. 30.🧩 Ishaan bought 3 mangoes and a lunch box for ₹200 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹66 (c) ₹200 (d) ₹197
31. 31.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
32. 32.🧩 Meera bought 6 kites for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹15 (b) not enough info (c) ₹10 (d) ₹60
33. 33.🧩 Saanvi bought 3 notebooks and a bag for ₹65 in all. Each notebook cost the same. What did one notebook cost? (a) ₹65 (b) ₹21 (c) not enough info (d) ₹62
34. 34.🧩 Kabir bought 5 markers and a water bottle for ₹145 in all. Each marker cost the same. What did one marker cost? (a) ₹29 (b) ₹145 (c) not enough info (d) ₹140
35. 35.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
36. 36.🧩 A box has 5 rows of oranges, with 7 in each row. How many oranges are in the box? (a) 42 (b) 12 (c) not enough info (d) 35
37. 37.🥭 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) no mango is sweet (c) no, check more (d) yes, mangoes match
38. 38.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
39. 39.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 2 PM (c) not enough info (d) 6 PM
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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