Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 712 · 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.🧩 Nisha bought 2 notebooks for ₹50 in all. Each notebook cost the same. What did one notebook cost? (a) ₹50 (b) ₹30 (c) ₹25 (d) not enough info
2. 2.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 80 (b) not enough info (c) 16 (d) 8
3. 3.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to waste time (d) to change answers
4. 4.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
5. 5.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) 5 PM (c) not enough info (d) 6 PM
6. 6.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
7. 7.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 4 PM
8. 8.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 4 PM (d) 8 PM
9. 9.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
10. 10.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
11. 11.🧩 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
12. 12.🧩 Aarav is 6 years old. Vihaan is 3 years older than Aarav. How old is Vihaan? (a) 10 (b) not enough info (c) 9 (d) 3
13. 13.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no, check more (c) yes, it is certain (d) no mango is sweet
14. 14.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
15. 15.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) guessing (d) asking the whole class
16. 16.🧩 Arjun is 11 years old. Ananya is older than Arjun. How old is Ananya? (a) 16 (b) not enough info (c) 12 (d) 13
17. 17.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
18. 18.🧩 Nisha bought 5 markers and a bag for ₹245 in all. Each marker cost the same. What did one marker cost? (a) ₹240 (b) ₹245 (c) ₹49 (d) not enough info
19. 19.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
20. 20.🧩 Ananya is 6 years old. Kabir is older than Ananya. How old is Kabir? (a) 7 (b) 11 (c) 8 (d) not enough info
21. 21.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) all dogs are mean (d) that one dog barked
22. 22.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
23. 23.🧩 Meera bought 5 notebooks for ₹300 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) not enough info (c) ₹300 (d) ₹65
24. 24.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
25. 25.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
26. 26.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
27. 27.🧩 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
28. 28.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
29. 29.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
30. 30.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
31. 31.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
32. 32.🧩 Ananya is 7 years old. Vihaan is 3 years older than Ananya. How old is Vihaan? (a) not enough info (b) 10 (c) 11 (d) 3
33. 33.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 9 PM (d) 8 PM
34. 34.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
35. 35.🧩 Kabir bought 2 markers for ₹70 in all. Each marker cost the same. What did one marker cost? (a) ₹70 (b) not enough info (c) ₹40 (d) ₹35
36. 36.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
37. 37.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
38. 38.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
39. 39.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
40. 40.🧩 Diya is 12 years old. Vihaan is 2 years older than Diya. How old is Vihaan? (a) not enough info (b) 2 (c) 14 (d) 15

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