Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 38 · 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 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 3 PM (c) 6 PM (d) not enough info
2. 2.🧩 Aarav bought 6 kites and a cap for ₹220 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹220 (c) ₹214 (d) ₹36
3. 3.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
4. 4.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
5. 5.🧩 A box has 3 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) not enough info (b) 8 (c) 15 (d) 20
6. 6.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
7. 7.🧩 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
8. 8.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
9. 9.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
10. 10.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
11. 11.🧩 Meera is 12 years old. Ishaan is 2 years older than Meera. How old is Ishaan? (a) 15 (b) 14 (c) not enough info (d) 2
12. 12.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
13. 13.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
14. 14.🧩 Vihaan bought 4 mangoes for ₹240 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹240 (c) ₹65 (d) ₹60
15. 15.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
16. 16.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 8 PM (d) 7 PM
17. 17.🧩 Diya bought 3 pens and a water bottle for ₹225 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹75 (c) ₹222 (d) ₹225
18. 18.🧩 Meera is 6 years old. Saanvi is 2 years older than Meera. How old is Saanvi? (a) 2 (b) not enough info (c) 8 (d) 9
19. 19.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
20. 20.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
21. 21.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) dogs hate you (d) all dogs are mean
22. 22.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 5 (b) 10 (c) 50 (d) not enough info
23. 23.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 5 PM (b) not enough info (c) 8 PM (d) 9 PM
24. 24.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
25. 25.🧩 Vihaan bought 4 balls for ₹180 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹45 (c) ₹50 (d) ₹180
26. 26.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 5 (b) 50 (c) 10 (d) not enough info
27. 27.🧩 Arjun bought 4 mangoes and a water bottle for ₹290 in all. Each mango cost the same. What did one mango cost? (a) ₹72 (b) ₹290 (c) ₹286 (d) not enough info
28. 28.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 6 PM
29. 29.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
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.🧩 Aarav is 11 years old. Tara is 4 years older than Aarav. How old is Tara? (a) 16 (b) not enough info (c) 4 (d) 15
32. 32.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
33. 33.🧩 Aarav bought 3 pens and a cap for ₹200 in all. Each pen cost the same. What did one pen cost? (a) ₹200 (b) not enough info (c) ₹66 (d) ₹197
34. 34.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
35. 35.🧩 Diya is 9 years old. Rohan is 4 years older than Diya. How old is Rohan? (a) not enough info (b) 4 (c) 14 (d) 13
36. 36.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 9 PM (d) 8 PM
37. 37.🧩 Tara bought 3 notebooks and a cap for ₹175 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹58 (c) ₹175 (d) ₹172
38. 38.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
39. 39.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 9 PM
40. 40.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 4 PM (c) 5 PM (d) not enough info

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