Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 442 · 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.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
2. 2.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) facts that support it (d) a rumour
3. 3.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
4. 4.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
5. 5.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 14 (b) not enough info (c) 7 (d) 70
6. 6.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
7. 7.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
8. 8.🧩 Ananya bought 4 markers for ₹180 in all. Each marker cost the same. What did one marker cost? (a) ₹45 (b) not enough info (c) ₹50 (d) ₹180
9. 9.🧩 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
10. 10.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
11. 11.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
12. 12.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, it is certain (c) yes, mangoes match (d) no, check more
13. 13.🧩 A box has 4 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 30 (b) 10 (c) 24 (d) not enough info
14. 14.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
15. 15.🧩 Ananya bought 4 balls and a water bottle for ₹160 in all. Each ball cost the same. What did one ball cost? (a) ₹160 (b) not enough info (c) ₹40 (d) ₹156
16. 16.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) for fun only (d) to be sure of results
17. 17.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
18. 18.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
19. 19.🧩 Aarav bought 3 notebooks and a bag for ₹165 in all. Each notebook cost the same. What did one notebook cost? (a) ₹165 (b) ₹55 (c) not enough info (d) ₹162
20. 20.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
21. 21.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
22. 22.🧩 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
23. 23.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
24. 24.🧩 Diya is 9 years old. Rohan is older than Diya. How old is Rohan? (a) 10 (b) 11 (c) 14 (d) not enough info
25. 25.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 7 PM (d) 8 PM
26. 26.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 10 (b) 5 (c) 50 (d) not enough info
27. 27.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 3 PM (d) not enough info
28. 28.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 6 PM (c) not enough info (d) 7 PM
29. 29.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 4 PM (c) 5 PM (d) not enough info
30. 30.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
31. 31.🧩 Arjun is 11 years old. Aarav is older than Arjun. How old is Aarav? (a) not enough info (b) 12 (c) 13 (d) 16
32. 32.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) 12 (b) not enough info (c) 6 (d) 60
33. 33.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
34. 34.🧩 Nisha bought 4 kites for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) ₹180 (c) ₹50 (d) not enough info
35. 35.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 10 PM (c) 9 PM (d) 6 PM
36. 36.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
37. 37.🧩 A box has 3 rows of oranges, with 9 in each row. How many oranges are in the box? (a) 36 (b) 27 (c) 12 (d) not enough info
38. 38.🧩 Ishaan bought 6 kites for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹180 (b) ₹30 (c) ₹35 (d) not enough info
39. 39.🐕 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
40. 40.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False

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