Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 556 · 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.🧩 Aarav bought 6 mangoes for ₹270 in all. Each mango cost the same. What did one mango cost? (a) ₹50 (b) not enough info (c) ₹270 (d) ₹45
2. 2.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
3. 3.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 6 PM
4. 4.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
5. 5.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 3 PM (c) 4 PM (d) 5 PM
6. 6.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) all dogs are mean (d) that one dog barked
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.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
9. 9.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
11. 11.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 18 (b) 9 (c) 90 (d) not enough info
12. 12.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
13. 13.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
14. 14.🧩 Ishaan bought 3 notebooks and a bag for ₹215 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹212 (c) ₹71 (d) ₹215
15. 15.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
16. 16.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
17. 17.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
18. 18.🥭 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
19. 19.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 4 PM
20. 20.🧩 A box has 4 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 11 (b) 35 (c) 28 (d) not enough info
21. 21.🧩 Meera is 7 years old. Vihaan is 3 years older than Meera. How old is Vihaan? (a) 10 (b) 11 (c) 3 (d) not enough info
22. 22.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 5 PM (d) 6 PM
23. 23.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
24. 24.🧩 Aarav bought 6 balls for ₹300 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹300 (c) ₹55 (d) ₹50
25. 25.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 6 PM (c) not enough info (d) 5 PM
26. 26.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
27. 27.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
28. 28.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
29. 29.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking one friend (d) asking the whole class
30. 30.🧩 Diya bought 5 pens for ₹175 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹35 (c) ₹40 (d) ₹175
31. 31.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 9 PM (c) 6 PM (d) not enough info
32. 32.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
33. 33.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to waste time (d) to change answers
34. 34.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) your handwriting (d) the page number
35. 35.🧩 Diya is 12 years old. Aarav is older than Diya. How old is Aarav? (a) 17 (b) 14 (c) not enough info (d) 13
36. 36.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
37. 37.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 7 PM
38. 38.🧩 Diya bought 6 mangoes and a bag for ₹420 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹70 (c) ₹420 (d) ₹414
39. 39.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
40. 40.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) not enough info (b) 5 (c) 10 (d) 50

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