Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 175 · 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.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 5 PM (b) 7 PM (c) 8 PM (d) not enough info
2. 2.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
3. 3.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
4. 4.🥭 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, check more (c) no mango is sweet (d) yes, mangoes match
5. 5.📊 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
6. 6.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 6 PM (c) 4 PM (d) not enough info
7. 7.🧩 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
8. 8.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a loud opinion (d) a rumour
9. 9.🧩 A box has 3 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 8 (b) 15 (c) 20 (d) not enough info
10. 10.🧩 Meera bought 3 balls for ₹180 in all. Each ball cost the same. What did one ball cost? (a) ₹65 (b) ₹60 (c) not enough info (d) ₹180
11. 11.🧩 Rohan bought 6 markers and a bag for ₹170 in all. Each marker cost the same. What did one marker cost? (a) ₹28 (b) ₹170 (c) ₹164 (d) not enough info
12. 12.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) for fun only (d) to be sure of results
13. 13.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
14. 14.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
15. 15.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
16. 16.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) your handwriting (d) what facts are given
17. 17.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 12 (b) 6 (c) not enough info (d) 60
18. 18.🧩 Aarav bought 4 mangoes and a bag for ₹80 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹76 (c) ₹20 (d) ₹80
19. 19.🐕 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
20. 20.🧩 Meera is 9 years old. Rohan is older than Meera. How old is Rohan? (a) 10 (b) 14 (c) 11 (d) not enough info
21. 21.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) 9 PM (c) 6 PM (d) not enough info
22. 22.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
23. 23.🧩 Ishaan is 10 years old. Nisha is older than Ishaan. How old is Nisha? (a) 15 (b) 12 (c) not enough info (d) 11
24. 24.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 2 PM (c) 5 PM (d) 4 PM
25. 25.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
26. 26.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
27. 27.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
28. 28.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
29. 29.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
30. 30.🧩 Diya bought 2 notebooks for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) ₹40 (c) not enough info (d) ₹20
31. 31.🧩 Arjun is 11 years old. Ananya is older than Arjun. How old is Ananya? (a) 13 (b) 16 (c) not enough info (d) 12
32. 32.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 7 (b) 70 (c) 14 (d) not enough info
33. 33.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
34. 34.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
35. 35.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
36. 36.🧩 Diya bought 2 mangoes for ₹120 in all. Each mango cost the same. What did one mango cost? (a) ₹65 (b) ₹60 (c) ₹120 (d) not enough info
37. 37.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
38. 38.🧩 Arjun bought 6 balls for ₹90 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹90 (c) ₹15 (d) ₹20
39. 39.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 9 PM (d) 8 PM
40. 40.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False

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