Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 856 · 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.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Meera is 8 years old. Ananya is older than Meera. How old is Ananya? (a) not enough info (b) 10 (c) 9 (d) 13
3. 3.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) that one dog barked (d) never see dogs
4. 4.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
5. 5.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 16 (b) 8 (c) not enough info (d) 80
6. 6.🧩 Ishaan bought 5 notebooks and a water bottle for ₹390 in all. Each notebook cost the same. What did one notebook cost? (a) ₹390 (b) not enough info (c) ₹385 (d) ₹78
7. 7.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
8. 8.🧩 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
9. 9.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 60 (b) 6 (c) not enough info (d) 12
10. 10.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 2 PM (d) 5 PM
11. 11.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 2 PM (d) 5 PM
12. 12.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
13. 13.🧩 Nisha is 7 years old. Vihaan is older than Nisha. How old is Vihaan? (a) not enough info (b) 8 (c) 9 (d) 12
14. 14.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) not enough info (b) 8 (c) 80 (d) 16
15. 15.🧩 A box has 5 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 24 (b) not enough info (c) 9 (d) 20
16. 16.🧩 Tara bought 2 mangoes for ₹20 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹20 (c) ₹15 (d) ₹10
17. 17.🧩 A box has 3 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 8 (b) not enough info (c) 15 (d) 20
18. 18.🧩 Arjun bought 2 pens for ₹40 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹40 (c) ₹20 (d) ₹25
19. 19.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) for fun only (d) to change answers
20. 20.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 50 (b) not enough info (c) 5 (d) 10
21. 21.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 5 PM
22. 22.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
23. 23.🧩 Kabir bought 6 pens and a water bottle for ₹140 in all. Each pen cost the same. What did one pen cost? (a) ₹23 (b) ₹140 (c) ₹134 (d) not enough info
24. 24.🧩 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
25. 25.🧩 Ananya bought 3 markers and a cap for ₹200 in all. Each marker cost the same. What did one marker cost? (a) ₹197 (b) not enough info (c) ₹66 (d) ₹200
26. 26.🧩 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
27. 27.🧩 Kabir bought 2 markers and a water bottle for ₹90 in all. Each marker cost the same. What did one marker cost? (a) ₹90 (b) ₹88 (c) not enough info (d) ₹45
28. 28.🥭 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) yes, mangoes match (c) no mango is sweet (d) no, check more
29. 29.🧩 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
30. 30.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 8 PM
31. 31.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 80 (b) not enough info (c) 8 (d) 16
32. 32.🧩 Diya is 8 years old. Saanvi is older than Diya. How old is Saanvi? (a) 10 (b) 13 (c) 9 (d) not enough info
33. 33.🧩 Meera is 8 years old. Nisha is 9 years older than Meera. How old is Nisha? (a) not enough info (b) 17 (c) 18 (d) 9
34. 34.🧩 A box has 8 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 16 (b) 64 (c) not enough info (d) 72
35. 35.🧩 A box has 8 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 36 (b) not enough info (c) 12 (d) 32
36. 36.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) not enough info (c) 7 PM (d) 8 PM
37. 37.🧩 Vihaan bought 2 balls for ₹110 in all. Each ball cost the same. What did one ball cost? (a) ₹110 (b) ₹60 (c) ₹55 (d) not enough info
38. 38.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
39. 39.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
40. 40.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

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