Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 657 · 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.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) that one dog barked (d) never see dogs
2. 2.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
4. 4.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
5. 5.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 4 PM (d) 7 PM
6. 6.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 4 PM (c) not enough info (d) 5 PM
7. 7.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
8. 8.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
9. 9.🧩 Vihaan is 6 years old. Saanvi is 7 years older than Vihaan. How old is Saanvi? (a) 7 (b) 14 (c) 13 (d) not enough info
10. 10.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
11. 11.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to waste time (d) to be sure of results
12. 12.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
13. 13.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
14. 14.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 8 PM
15. 15.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a rumour (d) a guess
16. 16.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
17. 17.🧩 Kabir is 11 years old. Meera is 3 years older than Kabir. How old is Meera? (a) 3 (b) 14 (c) 15 (d) not enough info
18. 18.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 8 PM (c) 4 PM (d) not enough info
19. 19.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 5 PM
20. 20.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
21. 21.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
22. 22.🧩 Diya is 11 years old. Rohan is 4 years older than Diya. How old is Rohan? (a) not enough info (b) 15 (c) 16 (d) 4
23. 23.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
24. 24.🧩 Saanvi bought 3 kites for ₹30 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹15 (c) ₹10 (d) ₹30
25. 25.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
26. 26.🧩 Ananya bought 2 markers and a water bottle for ₹100 in all. Each marker cost the same. What did one marker cost? (a) ₹50 (b) ₹98 (c) not enough info (d) ₹100
27. 27.🧩 Aarav bought 4 kites and a bag for ₹280 in all. Each kite cost the same. What did one kite cost? (a) ₹70 (b) ₹280 (c) ₹276 (d) not enough info
28. 28.🧩 Kabir is 7 years old. Diya is 9 years older than Kabir. How old is Diya? (a) 9 (b) 16 (c) not enough info (d) 17
29. 29.🧩 A box has 4 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 45 (b) not enough info (c) 13 (d) 36
30. 30.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
31. 31.🧩 Diya is 6 years old. Meera is 4 years older than Diya. How old is Meera? (a) not enough info (b) 11 (c) 4 (d) 10
32. 32.🧩 A box has 7 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 35 (b) 12 (c) not enough info (d) 40
33. 33.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
34. 34.🧩 Meera bought 5 notebooks for ₹275 in all. Each notebook cost the same. What did one notebook cost? (a) ₹275 (b) ₹55 (c) ₹60 (d) not enough info
35. 35.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 8 (b) 16 (c) 80 (d) not enough info
36. 36.🧩 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
37. 37.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
38. 38.🧩 A box has 5 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 9 (b) not enough info (c) 20 (d) 24
39. 39.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
40. 40.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 7 PM

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