Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 972 · 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? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
2. 2.🧩 Rohan bought 2 markers for ₹30 in all. Each marker cost the same. What did one marker cost? (a) ₹15 (b) not enough info (c) ₹20 (d) ₹30
3. 3.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 9 PM (b) not enough info (c) 6 PM (d) 10 PM
4. 4.🧩 Tara bought 4 markers for ₹140 in all. Each marker cost the same. What did one marker cost? (a) ₹35 (b) not enough info (c) ₹40 (d) ₹140
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) asking your pet (d) guessing
6. 6.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
7. 7.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 2 PM (c) not enough info (d) 5 PM
8. 8.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
9. 9.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) not enough info (c) 4 PM (d) 5 PM
10. 10.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) not enough info (c) 8 PM (d) 7 PM
11. 11.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) what facts are given (d) the page number
12. 12.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
13. 13.🧩 Aarav bought 2 markers and a water bottle for ₹70 in all. Each marker cost the same. What did one marker cost? (a) ₹70 (b) ₹68 (c) not enough info (d) ₹35
14. 14.🧩 Tara is 11 years old. Kabir is 5 years older than Tara. How old is Kabir? (a) not enough info (b) 5 (c) 17 (d) 16
15. 15.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
16. 16.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
17. 17.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
19. 19.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 6 PM
20. 20.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) not enough info (c) 4 PM (d) 3 PM
21. 21.🧩 Meera bought 4 pens for ₹180 in all. Each pen cost the same. What did one pen cost? (a) ₹45 (b) not enough info (c) ₹50 (d) ₹180
22. 22.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 14 (b) not enough info (c) 70 (d) 7
23. 23.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) that one dog barked (d) dogs hate you
24. 24.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
25. 25.🧩 Tara is 10 years old. Saanvi is 8 years older than Tara. How old is Saanvi? (a) not enough info (b) 8 (c) 18 (d) 19
26. 26.🧩 A box has 6 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 35 (b) 30 (c) not enough info (d) 11
27. 27.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 8 (b) 80 (c) 16 (d) not enough info
28. 28.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) facts that support it (d) a rumour
29. 29.🧩 Tara is 12 years old. Ishaan is older than Tara. How old is Ishaan? (a) 17 (b) not enough info (c) 14 (d) 13
30. 30.🧩 A box has 4 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 12 (b) 40 (c) not enough info (d) 32
31. 31.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
32. 32.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 2 PM
33. 33.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 9 PM (c) not enough info (d) 8 PM
34. 34.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
35. 35.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
36. 36.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
37. 37.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
38. 38.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 18 (b) 90 (c) not enough info (d) 9
39. 39.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) not enough info (b) 9 (c) 18 (d) 90
40. 40.🧩 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

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