Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 979 · 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) never see dogs (c) dogs hate you (d) all dogs are mean
2. 2.🧩 Meera bought 2 pens for ₹30 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) ₹15 (c) not enough info (d) ₹30
3. 3.🧩 A box has 6 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 35 (b) not enough info (c) 30 (d) 11
4. 4.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking one friend (d) asking the whole class
5. 5.🧩 A box of mangoes has 4 in each row. How many mangoes are in the box? (a) 40 (b) 8 (c) not enough info (d) 4
6. 6.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
7. 7.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
8. 8.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, mangoes match (c) no mango is sweet (d) yes, it is certain
9. 9.🧩 Aarav is 11 years old. Rohan is older than Aarav. How old is Rohan? (a) 16 (b) not enough info (c) 13 (d) 12
10. 10.🧩 Saanvi bought 2 pens and a bag for ₹70 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) ₹68 (c) ₹70 (d) not enough info
11. 11.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
12. 12.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
13. 13.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
14. 14.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
15. 15.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 3 PM
16. 16.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 6 PM (c) 7 PM (d) not enough info
17. 17.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
18. 18.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 4 PM
19. 19.🧩 Saanvi bought 2 pens and a cap for ₹70 in all. Each pen cost the same. What did one pen cost? (a) ₹35 (b) ₹68 (c) ₹70 (d) not enough info
20. 20.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 70 (b) 14 (c) 7 (d) not enough info
21. 21.🧩 Saanvi bought 4 pens for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) not enough info (c) ₹80 (d) ₹20
22. 22.🧩 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
23. 23.🧩 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
24. 24.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 7 PM
25. 25.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
26. 26.🧩 Kabir bought 3 notebooks for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹35 (b) not enough info (c) ₹30 (d) ₹90
27. 27.🧩 A box has 6 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 13 (b) 42 (c) not enough info (d) 49
28. 28.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
29. 29.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
30. 30.🧩 A box has 8 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 54 (b) 14 (c) not enough info (d) 48
31. 31.🧩 A box has 4 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 8 (b) not enough info (c) 16 (d) 20
32. 32.🧩 Rohan bought 2 mangoes and a lunch box for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹90 (b) ₹88 (c) ₹45 (d) not enough info
33. 33.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 5 PM (c) 4 PM (d) not enough info
34. 34.🧩 Ananya bought 6 notebooks and a bag for ₹290 in all. Each notebook cost the same. What did one notebook cost? (a) ₹290 (b) ₹48 (c) not enough info (d) ₹284
35. 35.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) 70 (b) 14 (c) not enough info (d) 7
36. 36.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
37. 37.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 8 (b) 40 (c) not enough info (d) 4
38. 38.🧩 Kabir bought 6 pens for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) ₹150 (c) ₹25 (d) not enough info
39. 39.🧩 Diya bought 6 pens for ₹360 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) not enough info (c) ₹360 (d) ₹65
40. 40.🧩 Saanvi is 12 years old. Ananya is 4 years older than Saanvi. How old is Ananya? (a) not enough info (b) 4 (c) 16 (d) 17

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