Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 8 · 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.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 60 (b) 12 (c) 6 (d) not enough info
2. 2.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
3. 3.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
4. 4.🥭 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) no, check more (c) no mango is sweet (d) yes, it is certain
5. 5.🧩 Arjun is 12 years old. Tara is older than Arjun. How old is Tara? (a) not enough info (b) 14 (c) 17 (d) 13
6. 6.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
7. 7.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) guessing (d) asking the whole class
8. 8.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
9. 9.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
10. 10.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 3 PM (d) 2 PM
11. 11.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
12. 12.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
13. 13.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
14. 14.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 3 PM (c) 5 PM (d) not enough info
15. 15.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
16. 16.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
17. 17.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) 9 PM (c) not enough info (d) 6 PM
18. 18.🧩 Aarav bought 4 markers for ₹160 in all. Each marker cost the same. What did one marker cost? (a) ₹45 (b) not enough info (c) ₹160 (d) ₹40
19. 19.🧩 Aarav bought 6 mangoes and a cap for ₹150 in all. Each mango cost the same. What did one mango cost? (a) ₹25 (b) not enough info (c) ₹150 (d) ₹144
20. 20.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to change answers (d) to waste time
21. 21.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
22. 22.🧩 Ananya is 8 years old. Rohan is older than Ananya. How old is Rohan? (a) 9 (b) not enough info (c) 10 (d) 13
23. 23.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
24. 24.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
25. 25.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) 5 PM (c) not enough info (d) 6 PM
26. 26.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
27. 27.🧩 A box has 6 rows of apples, with 9 in each row. How many apples are in the box? (a) 54 (b) not enough info (c) 63 (d) 15
28. 28.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
29. 29.🧩 Arjun bought 5 balls for ₹125 in all. Each ball cost the same. What did one ball cost? (a) ₹25 (b) ₹30 (c) not enough info (d) ₹125
30. 30.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
31. 31.🧩 Kabir is 6 years old. Rohan is older than Kabir. How old is Rohan? (a) 11 (b) 8 (c) 7 (d) not enough info
32. 32.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
33. 33.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
34. 34.🧩 Rohan is 7 years old. Aarav is older than Rohan. How old is Aarav? (a) 9 (b) 8 (c) not enough info (d) 12
35. 35.🧩 A box has 6 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 28 (b) not enough info (c) 24 (d) 10
36. 36.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 7 (b) 70 (c) not enough info (d) 14
37. 37.🧩 Ishaan bought 6 mangoes and a lunch box for ₹350 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹350 (c) ₹58 (d) ₹344
38. 38.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) dogs hate you (d) that one dog barked
39. 39.🧩 A box has 5 rows of eggs, with 8 in each row. How many eggs are in the box? (a) not enough info (b) 13 (c) 40 (d) 48
40. 40.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) 14 (b) 70 (c) not enough info (d) 7

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