Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 99 · 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 tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
2. 2.🥭 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, check more (c) no mango is sweet (d) yes, mangoes match
3. 3.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Kabir is 6 years old. Ananya is older than Kabir. How old is Ananya? (a) 11 (b) 8 (c) 7 (d) not enough info
5. 5.🧩 Ananya is 8 years old. Diya is older than Ananya. How old is Diya? (a) 10 (b) not enough info (c) 13 (d) 9
6. 6.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) dogs hate you (d) never see dogs
7. 7.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
8. 8.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
9. 9.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
10. 10.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
11. 11.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking one friend (d) asking the whole class
12. 12.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
13. 13.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 6 PM
14. 14.🧩 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
15. 15.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
16. 16.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
17. 17.🧩 A box has 5 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 35 (b) 12 (c) not enough info (d) 42
18. 18.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
19. 19.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) facts that support it (d) a rumour
20. 20.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
21. 21.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
22. 22.🧩 Nisha bought 4 markers and a bag for ₹220 in all. Each marker cost the same. What did one marker cost? (a) ₹216 (b) ₹220 (c) not enough info (d) ₹55
23. 23.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
24. 24.🧩 A box has 7 rows of guavas, with 6 in each row. How many guavas are in the box? (a) 42 (b) 48 (c) not enough info (d) 13
25. 25.🧩 Saanvi bought 5 pens for ₹175 in all. Each pen cost the same. What did one pen cost? (a) ₹40 (b) ₹175 (c) not enough info (d) ₹35
26. 26.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) not enough info (b) 18 (c) 9 (d) 90
27. 27.🧩 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
28. 28.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
29. 29.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 3 PM (c) 4 PM (d) 5 PM
30. 30.🧩 Vihaan is 12 years old. Aarav is 9 years older than Vihaan. How old is Aarav? (a) 9 (b) 22 (c) not enough info (d) 21
31. 31.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
32. 32.🧩 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
33. 33.🧩 Ananya bought 2 mangoes and a lunch box for ₹60 in all. Each mango cost the same. What did one mango cost? (a) ₹60 (b) ₹30 (c) not enough info (d) ₹58
34. 34.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
35. 35.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to change answers (d) to be sure of results
36. 36.🧩 Nisha is 7 years old. Saanvi is older than Nisha. How old is Saanvi? (a) 8 (b) 9 (c) not enough info (d) 12
37. 37.🧩 Aarav bought 4 markers for ₹100 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹25 (c) ₹30 (d) ₹100
38. 38.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
39. 39.🧩 Kabir bought 5 balls for ₹275 in all. Each ball cost the same. What did one ball cost? (a) ₹275 (b) ₹60 (c) not enough info (d) ₹55
40. 40.🧩 Tara is 9 years old. Arjun is 2 years older than Tara. How old is Arjun? (a) not enough info (b) 2 (c) 11 (d) 12

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