Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 67 · 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.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) never see dogs (d) all dogs are mean
2. 2.🧩 Arjun is 7 years old. Aarav is older than Arjun. How old is Aarav? (a) 12 (b) 9 (c) 8 (d) not enough info
3. 3.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
4. 4.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
5. 5.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 2 PM (c) 4 PM (d) not enough info
6. 6.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 9 (b) not enough info (c) 90 (d) 18
7. 7.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
8. 8.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 8 PM (b) not enough info (c) 5 PM (d) 9 PM
9. 9.🧩 Nisha is 8 years old. Arjun is older than Nisha. How old is Arjun? (a) 13 (b) 10 (c) not enough info (d) 9
10. 10.🧩 Aarav is 6 years old. Nisha is 7 years older than Aarav. How old is Nisha? (a) 14 (b) 7 (c) not enough info (d) 13
11. 11.🥭 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) yes, it is certain (c) no mango is sweet (d) no, check more
12. 12.🧩 Meera is 8 years old. Tara is 3 years older than Meera. How old is Tara? (a) 3 (b) 11 (c) 12 (d) not enough info
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.🧩 Vihaan bought 6 notebooks for ₹330 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) not enough info (c) ₹330 (d) ₹55
15. 15.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
16. 16.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 4 PM
17. 17.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) asking one friend (d) guessing
18. 18.🧩 Ananya bought 3 kites for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹180 (b) not enough info (c) ₹60 (d) ₹65
19. 19.🧩 Ananya is 7 years old. Kabir is older than Ananya. How old is Kabir? (a) not enough info (b) 12 (c) 9 (d) 8
20. 20.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
21. 21.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
22. 22.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
23. 23.🧩 Nisha bought 4 balls and a water bottle for ₹70 in all. Each ball cost the same. What did one ball cost? (a) ₹17 (b) ₹66 (c) ₹70 (d) not enough info
24. 24.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info
25. 25.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
26. 26.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 7 PM
27. 27.🧩 A box has 6 rows of apples, with 7 in each row. How many apples are in the box? (a) 49 (b) 13 (c) 42 (d) not enough info
28. 28.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 4 PM
29. 29.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) 7 (b) 70 (c) 14 (d) not enough info
30. 30.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
31. 31.🧩 Ishaan is 7 years old. Kabir is 6 years older than Ishaan. How old is Kabir? (a) 14 (b) 6 (c) 13 (d) not enough info
32. 32.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) not enough info (c) 2 PM (d) 5 PM
33. 33.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) not enough info (b) 8 PM (c) 4 PM (d) 7 PM
34. 34.🧩 Tara bought 6 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹10 (b) ₹60 (c) ₹15 (d) not enough info
35. 35.🧩 Saanvi bought 5 balls for ₹225 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) ₹50 (c) ₹225 (d) not enough info
36. 36.🧩 Saanvi is 10 years old. Diya is 6 years older than Saanvi. How old is Diya? (a) 17 (b) 16 (c) 6 (d) not enough info
37. 37.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
38. 38.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a loud opinion (d) a rumour
39. 39.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 4 PM
40. 40.🧩 Ishaan is 12 years old. Kabir is older than Ishaan. How old is Kabir? (a) 14 (b) 13 (c) 17 (d) not enough info

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