Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 917 · 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. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 4 PM
2. 2.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
3. 3.🧩 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
4. 4.🧩 Meera bought 5 pens for ₹225 in all. Each pen cost the same. What did one pen cost? (a) ₹45 (b) not enough info (c) ₹50 (d) ₹225
5. 5.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
6. 6.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
7. 7.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 7 PM (c) not enough info (d) 6 PM
8. 8.🧩 Vihaan is 6 years old. Rohan is 3 years older than Vihaan. How old is Rohan? (a) 9 (b) not enough info (c) 10 (d) 3
9. 9.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) all dogs are mean (d) never see dogs
10. 10.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 6 (b) 60 (c) not enough info (d) 12
11. 11.🧩 A box has 5 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 25 (b) 30 (c) not enough info (d) 10
12. 12.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
13. 13.🧩 Meera bought 3 balls for ₹75 in all. Each ball cost the same. What did one ball cost? (a) ₹25 (b) ₹75 (c) ₹30 (d) not enough info
14. 14.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
15. 15.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 7 PM (c) not enough info (d) 8 PM
16. 16.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
17. 17.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Arjun bought 3 balls and a cap for ₹195 in all. Each ball cost the same. What did one ball cost? (a) ₹192 (b) ₹195 (c) ₹65 (d) not enough info
19. 19.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
20. 20.🧩 A box has 8 rows of apples, with 5 in each row. How many apples are in the box? (a) not enough info (b) 40 (c) 45 (d) 13
21. 21.🧩 Tara is 10 years old. Aarav is older than Tara. How old is Aarav? (a) not enough info (b) 11 (c) 15 (d) 12
22. 22.🧩 Tara bought 2 kites for ₹50 in all. Each kite cost the same. What did one kite cost? (a) ₹30 (b) ₹25 (c) not enough info (d) ₹50
23. 23.🧩 Kabir is 7 years old. Ishaan is 6 years older than Kabir. How old is Ishaan? (a) 14 (b) 13 (c) 6 (d) not enough info
24. 24.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
25. 25.🧩 Nisha bought 4 notebooks for ₹80 in all. Each notebook cost the same. What did one notebook cost? (a) ₹25 (b) ₹80 (c) ₹20 (d) not enough info
26. 26.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
27. 27.🧩 Tara bought 2 balls for ₹90 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) ₹50 (c) ₹90 (d) not enough info
28. 28.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the colour of ink (d) the page number
29. 29.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
30. 30.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
31. 31.🧩 Ishaan bought 2 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹65 (b) not enough info (c) ₹120 (d) ₹60
32. 32.🧩 Aarav is 7 years old. Ananya is older than Aarav. How old is Ananya? (a) 9 (b) 12 (c) not enough info (d) 8
33. 33.🧩 Tara is 11 years old. Ananya is older than Tara. How old is Ananya? (a) 13 (b) 12 (c) 16 (d) not enough info
34. 34.🧩 Kabir is 10 years old. Meera is older than Kabir. How old is Meera? (a) 11 (b) not enough info (c) 15 (d) 12
35. 35.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 3 PM
36. 36.🧩 Vihaan bought 3 kites and a bag for ₹230 in all. Each kite cost the same. What did one kite cost? (a) ₹76 (b) ₹227 (c) ₹230 (d) not enough info
37. 37.🧩 Rohan bought 3 kites and a cap for ₹220 in all. Each kite cost the same. What did one kite cost? (a) ₹220 (b) ₹73 (c) ₹217 (d) not enough info
38. 38.🧩 Meera is 10 years old. Rohan is 6 years older than Meera. How old is Rohan? (a) 16 (b) 6 (c) not enough info (d) 17
39. 39.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) not enough info (b) 7 PM (c) 4 PM (d) 8 PM
40. 40.🧩 Ananya is 12 years old. Diya is 8 years older than Ananya. How old is Diya? (a) 8 (b) 21 (c) not enough info (d) 20

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