Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 622 · 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.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
2. 2.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to be sure of results (c) for fun only (d) to waste time
3. 3.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
4. 4.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 60 (b) not enough info (c) 12 (d) 6
5. 5.🧩 Ananya is 11 years old. Saanvi is older than Ananya. How old is Saanvi? (a) 12 (b) 16 (c) 13 (d) not enough info
6. 6.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
7. 7.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
8. 8.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
9. 9.🧩 A box has 6 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 12 (b) 36 (c) not enough info (d) 42
10. 10.🧩 Saanvi is 6 years old. Tara is older than Saanvi. How old is Tara? (a) 11 (b) 8 (c) not enough info (d) 7
11. 11.🧩 A box has 7 rows of apples, with 8 in each row. How many apples are in the box? (a) 56 (b) not enough info (c) 15 (d) 64
12. 12.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
13. 13.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a guess (d) a loud opinion
14. 14.🧩 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
15. 15.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Ishaan bought 4 markers and a bag for ₹270 in all. Each marker cost the same. What did one marker cost? (a) ₹67 (b) ₹270 (c) not enough info (d) ₹266
17. 17.🧩 Kabir is 10 years old. Ishaan is older than Kabir. How old is Ishaan? (a) 11 (b) not enough info (c) 15 (d) 12
18. 18.🧩 Rohan bought 3 kites and a cap for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹120 (b) ₹117 (c) ₹40 (d) not enough info
19. 19.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) 6 PM (c) not enough info (d) 5 PM
20. 20.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking one friend (d) asking your pet
21. 21.🧩 Nisha is 6 years old. Aarav is 4 years older than Nisha. How old is Aarav? (a) not enough info (b) 10 (c) 11 (d) 4
22. 22.🧩 Vihaan is 9 years old. Ishaan is 5 years older than Vihaan. How old is Ishaan? (a) not enough info (b) 14 (c) 15 (d) 5
23. 23.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) 3 PM (d) not enough info
24. 24.🧩 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
25. 25.🧩 Kabir is 11 years old. Meera is 6 years older than Kabir. How old is Meera? (a) 6 (b) 18 (c) 17 (d) not enough info
26. 26.🧩 Nisha is 7 years old. Kabir is 6 years older than Nisha. How old is Kabir? (a) 6 (b) 13 (c) 14 (d) not enough info
27. 27.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
28. 28.🧩 A box has 4 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) 32 (b) not enough info (c) 12 (d) 40
29. 29.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 6 (b) not enough info (c) 12 (d) 60
30. 30.🧩 Ishaan bought 3 kites for ₹135 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹50 (c) ₹45 (d) ₹135
31. 31.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
32. 32.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 2 PM (b) 4 PM (c) not enough info (d) 5 PM
33. 33.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
34. 34.🧩 Diya bought 5 kites and a water bottle for ₹130 in all. Each kite cost the same. What did one kite cost? (a) ₹125 (b) ₹130 (c) not enough info (d) ₹26
35. 35.🧩 Tara bought 6 balls and a lunch box for ₹390 in all. Each ball cost the same. What did one ball cost? (a) ₹384 (b) not enough info (c) ₹390 (d) ₹65
36. 36.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
37. 37.🧩 Vihaan bought 4 pens and a lunch box for ₹160 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) not enough info (c) ₹160 (d) ₹156
38. 38.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
39. 39.🧩 Vihaan bought 2 markers for ₹80 in all. Each marker cost the same. What did one marker cost? (a) ₹40 (b) ₹80 (c) ₹45 (d) not enough info
40. 40.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 7 PM

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