Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 803 · 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.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 7 PM
2. 2.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) guessing (d) asking your pet
3. 3.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) the page number (d) what facts are given
4. 4.🧩 Aarav bought 5 pens and a cap for ₹305 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹61 (c) ₹300 (d) ₹305
5. 5.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
6. 6.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
7. 7.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
8. 8.🧩 Ananya is 8 years old. Arjun is older than Ananya. How old is Arjun? (a) 13 (b) 9 (c) 10 (d) not enough info
9. 9.🧩 Meera is 10 years old. Ishaan is older than Meera. How old is Ishaan? (a) 12 (b) not enough info (c) 15 (d) 11
10. 10.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) dogs hate you (d) all dogs are mean
11. 11.🧩 A box of apples has 9 in each row. How many apples are in the box? (a) 18 (b) not enough info (c) 90 (d) 9
12. 12.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
13. 13.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
14. 14.🧩 A box of mangoes has 9 in each row. How many mangoes are in the box? (a) 90 (b) not enough info (c) 18 (d) 9
15. 15.🧩 Aarav bought 4 balls for ₹140 in all. Each ball cost the same. What did one ball cost? (a) ₹35 (b) not enough info (c) ₹140 (d) ₹40
16. 16.🧩 A box has 7 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 49 (b) 56 (c) not enough info (d) 14
17. 17.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
18. 18.🧩 Aarav is 6 years old. Tara is older than Aarav. How old is Tara? (a) 8 (b) not enough info (c) 11 (d) 7
19. 19.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) not enough info (b) 8 (c) 16 (d) 80
20. 20.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
21. 21.🧩 Diya bought 6 markers for ₹240 in all. Each marker cost the same. What did one marker cost? (a) ₹240 (b) ₹45 (c) not enough info (d) ₹40
22. 22.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
24. 24.🧩 Rohan is 6 years old. Diya is 9 years older than Rohan. How old is Diya? (a) 15 (b) 16 (c) 9 (d) not enough info
25. 25.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
26. 26.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a guess (d) a loud opinion
27. 27.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to change answers (c) to be sure of results (d) for fun only
28. 28.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
29. 29.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 3 PM (b) not enough info (c) 4 PM (d) 5 PM
30. 30.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
31. 31.🧩 Tara is 8 years old. Kabir is 8 years older than Tara. How old is Kabir? (a) 8 (b) not enough info (c) 17 (d) 16
32. 32.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 7 PM (c) not enough info (d) 8 PM
33. 33.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 2 PM (c) 6 PM (d) 5 PM
34. 34.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
35. 35.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
36. 36.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 3 PM (c) 5 PM (d) 6 PM
37. 37.🧩 A box has 8 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 12 (b) not enough info (c) 36 (d) 32
38. 38.🧩 Aarav bought 2 balls and a water bottle for ₹130 in all. Each ball cost the same. What did one ball cost? (a) ₹65 (b) ₹128 (c) not enough info (d) ₹130
39. 39.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
40. 40.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info

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