Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 288 · 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: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
2. 2.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 9 PM (b) 6 PM (c) 8 PM (d) not enough info
3. 3.🧩 Meera bought 3 balls for ₹105 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹35 (c) ₹105 (d) ₹40
4. 4.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
5. 5.🥭 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) no, check more (c) yes, it is certain (d) yes, mangoes match
6. 6.🧩 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
7. 7.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 7 PM (c) 8 PM (d) not enough info
8. 8.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
9. 9.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
10. 10.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
11. 11.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
12. 12.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
13. 13.🧩 Ananya bought 5 notebooks and a lunch box for ₹255 in all. Each notebook cost the same. What did one notebook cost? (a) ₹51 (b) ₹255 (c) ₹250 (d) not enough info
14. 14.🧩 Diya is 6 years old. Nisha is older than Diya. How old is Nisha? (a) 8 (b) 11 (c) 7 (d) not enough info
15. 15.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
16. 16.🧩 Aarav bought 6 markers for ₹330 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹330 (c) ₹55 (d) not enough info
17. 17.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 6 (b) 60 (c) not enough info (d) 12
18. 18.🧩 A box has 3 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 16 (b) 7 (c) 12 (d) not enough info
19. 19.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 3 PM (c) 5 PM (d) not enough info
20. 20.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
21. 21.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
22. 22.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) to change answers (d) for fun only
23. 23.🧩 Kabir is 10 years old. Meera is older than Kabir. How old is Meera? (a) 11 (b) 15 (c) not enough info (d) 12
24. 24.🧩 Meera bought 6 notebooks for ₹240 in all. Each notebook cost the same. What did one notebook cost? (a) ₹45 (b) ₹240 (c) ₹40 (d) not enough info
25. 25.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
26. 26.🧩 Ananya is 8 years old. Vihaan is 5 years older than Ananya. How old is Vihaan? (a) 5 (b) not enough info (c) 14 (d) 13
27. 27.📊 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
28. 28.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
29. 29.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 7 PM
30. 30.🐕 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
31. 31.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
32. 32.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 5 PM
33. 33.🧩 Saanvi bought 6 markers for ₹180 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹35 (c) ₹30 (d) ₹180
34. 34.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
35. 35.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) 7 PM (d) not enough info
36. 36.🧩 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
37. 37.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 3 PM (c) 5 PM (d) not enough info
38. 38.🧩 Ananya is 11 years old. Arjun is 3 years older than Ananya. How old is Arjun? (a) 14 (b) 15 (c) 3 (d) not enough info
39. 39.🧩 Rohan is 7 years old. Ishaan is older than Rohan. How old is Ishaan? (a) 9 (b) 12 (c) 8 (d) not enough info
40. 40.🧩 Ananya bought 2 notebooks and a bag for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) ₹118 (c) not enough info (d) ₹120

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