Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 635 · 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? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
2. 2.🧩 Saanvi is 7 years old. Kabir is 3 years older than Saanvi. How old is Kabir? (a) not enough info (b) 11 (c) 10 (d) 3
3. 3.🧩 A box has 6 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 14 (b) 56 (c) not enough info (d) 48
4. 4.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) guessing (c) asking one friend (d) asking the whole class
6. 6.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) your handwriting (d) the page number
7. 7.🥭 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
8. 8.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a loud opinion (d) a rumour
9. 9.🧩 Arjun is 11 years old. Meera is 7 years older than Arjun. How old is Meera? (a) 7 (b) 18 (c) not enough info (d) 19
10. 10.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 4 PM
11. 11.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
12. 12.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
13. 13.🧩 Ishaan bought 5 notebooks and a water bottle for ₹135 in all. Each notebook cost the same. What did one notebook cost? (a) ₹130 (b) ₹135 (c) not enough info (d) ₹27
14. 14.🧩 Ishaan bought 5 notebooks and a water bottle for ₹295 in all. Each notebook cost the same. What did one notebook cost? (a) ₹295 (b) not enough info (c) ₹59 (d) ₹290
15. 15.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 6 PM (c) 4 PM (d) not enough info
16. 16.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
17. 17.🧩 Meera bought 5 kites and a lunch box for ₹165 in all. Each kite cost the same. What did one kite cost? (a) ₹160 (b) ₹165 (c) not enough info (d) ₹33
18. 18.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) that one dog barked (d) all dogs are mean
19. 19.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
20. 20.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
21. 21.🧩 Nisha bought 6 markers for ₹90 in all. Each marker cost the same. What did one marker cost? (a) ₹15 (b) ₹20 (c) not enough info (d) ₹90
22. 22.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
23. 23.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
24. 24.🧩 A box has 5 rows of eggs, with 8 in each row. How many eggs are in the box? (a) 48 (b) 13 (c) 40 (d) not enough info
25. 25.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
26. 26.🧩 A box has 5 rows of laddoos, with 8 in each row. How many laddoos are in the box? (a) 40 (b) 13 (c) not enough info (d) 48
27. 27.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 9 PM (d) 8 PM
28. 28.🧩 Meera bought 2 pens and a lunch box for ₹120 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹120 (c) ₹118 (d) ₹60
29. 29.🧩 A box has 6 rows of apples, with 8 in each row. How many apples are in the box? (a) 14 (b) 56 (c) not enough info (d) 48
30. 30.🧩 Ananya bought 6 notebooks for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) not enough info (c) ₹15 (d) ₹90
31. 31.🧩 Meera bought 2 kites for ₹110 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹55 (c) ₹60 (d) ₹110
32. 32.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
33. 33.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 3 PM (d) 5 PM
34. 34.🧩 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
35. 35.🧩 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
36. 36.🧩 Nisha is 9 years old. Diya is older than Nisha. How old is Diya? (a) 11 (b) not enough info (c) 10 (d) 14
37. 37.🧩 Saanvi bought 5 notebooks for ₹300 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) ₹65 (c) not enough info (d) ₹300
38. 38.🧩 Arjun is 12 years old. Aarav is older than Arjun. How old is Aarav? (a) not enough info (b) 14 (c) 17 (d) 13
39. 39.🧩 Rohan bought 4 kites and a cap for ₹290 in all. Each kite cost the same. What did one kite cost? (a) ₹72 (b) ₹290 (c) ₹286 (d) not enough info
40. 40.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 10 PM (c) 6 PM (d) not enough info

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