Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 660 · 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 apples has 6 in each row. How many apples are in the box? (a) 6 (b) 12 (c) not enough info (d) 60
2. 2.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
3. 3.🧩 Vihaan bought 4 pens and a water bottle for ₹250 in all. Each pen cost the same. What did one pen cost? (a) ₹250 (b) ₹246 (c) not enough info (d) ₹62
4. 4.🧩 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
5. 5.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
6. 6.🧩 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
7. 7.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) asking one friend (d) guessing
8. 8.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 5 PM (c) 7 PM (d) not enough info
9. 9.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 6 PM (d) not enough info
10. 10.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 5 PM
11. 11.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) that one dog barked (d) all dogs are mean
12. 12.🧩 Diya bought 4 notebooks and a cap for ₹230 in all. Each notebook cost the same. What did one notebook cost? (a) ₹230 (b) ₹57 (c) not enough info (d) ₹226
13. 13.🧩 A box of eggs has 8 in each row. How many eggs are in the box? (a) 8 (b) 80 (c) 16 (d) not enough info
14. 14.🧩 Nisha is 7 years old. Vihaan is older than Nisha. How old is Vihaan? (a) 8 (b) 9 (c) 12 (d) not enough info
15. 15.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
16. 16.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) no mango is sweet (c) no, check more (d) yes, mangoes match
17. 17.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
18. 18.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
19. 19.🧩 Arjun bought 5 mangoes and a bag for ₹175 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹35 (c) ₹175 (d) ₹170
20. 20.🧩 Nisha is 12 years old. Diya is older than Nisha. How old is Diya? (a) 17 (b) 14 (c) 13 (d) not enough info
21. 21.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
22. 22.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
23. 23.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) a rumour (d) facts that support it
24. 24.🧩 Saanvi bought 2 pens and a water bottle for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) ₹80 (c) not enough info (d) ₹78
25. 25.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
26. 26.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) what facts are given (d) your handwriting
27. 27.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 5 PM (c) not enough info (d) 4 PM
28. 28.🧩 Kabir bought 4 mangoes and a cap for ₹280 in all. Each mango cost the same. What did one mango cost? (a) ₹70 (b) not enough info (c) ₹280 (d) ₹276
29. 29.🧩 A box has 4 rows of apples, with 4 in each row. How many apples are in the box? (a) 8 (b) not enough info (c) 16 (d) 20
30. 30.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
31. 31.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
32. 32.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) 5 PM (d) not enough info
33. 33.🧩 Meera bought 4 balls and a water bottle for ₹270 in all. Each ball cost the same. What did one ball cost? (a) ₹67 (b) ₹270 (c) ₹266 (d) not enough info
34. 34.🧩 Arjun is 11 years old. Saanvi is older than Arjun. How old is Saanvi? (a) 16 (b) not enough info (c) 13 (d) 12
35. 35.🧩 Diya bought 6 markers and a water bottle for ₹270 in all. Each marker cost the same. What did one marker cost? (a) ₹270 (b) not enough info (c) ₹264 (d) ₹45
36. 36.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 10 PM (b) 6 PM (c) 9 PM (d) not enough info
37. 37.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
38. 38.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
39. 39.🧩 A box has 8 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 12 (b) 36 (c) not enough info (d) 32
40. 40.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 2 PM

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