Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 452 · 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: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
2. 2.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
3. 3.🧩 Ishaan bought 6 pens and a cap for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹120 (b) ₹20 (c) ₹114 (d) not enough info
4. 4.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
5. 5.🧩 Saanvi is 12 years old. Ananya is older than Saanvi. How old is Ananya? (a) 14 (b) not enough info (c) 13 (d) 17
6. 6.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
7. 7.🧩 A box has 3 rows of guavas, with 6 in each row. How many guavas are in the box? (a) not enough info (b) 24 (c) 18 (d) 9
8. 8.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
9. 9.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
10. 10.🧩 Rohan bought 3 balls for ₹75 in all. Each ball cost the same. What did one ball cost? (a) ₹30 (b) ₹75 (c) ₹25 (d) not enough info
11. 11.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
12. 12.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to change answers (d) to be sure of results
13. 13.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
14. 14.🧩 Ishaan bought 6 mangoes and a cap for ₹90 in all. Each mango cost the same. What did one mango cost? (a) ₹90 (b) not enough info (c) ₹15 (d) ₹84
15. 15.🧩 A box has 7 rows of guavas, with 5 in each row. How many guavas are in the box? (a) 35 (b) 40 (c) not enough info (d) 12
16. 16.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking the whole class (d) asking your pet
17. 17.🐕 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
18. 18.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
19. 19.📝 What does “evidence” mean? (a) a loud opinion (b) facts that support it (c) a guess (d) a rumour
20. 20.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
21. 21.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 4 PM (c) not enough info (d) 5 PM
22. 22.🧩 A box has 7 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 42 (b) not enough info (c) 13 (d) 48
23. 23.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
24. 24.🧩 Diya bought 2 pens and a cap for ₹170 in all. Each pen cost the same. What did one pen cost? (a) ₹85 (b) not enough info (c) ₹170 (d) ₹168
25. 25.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
26. 26.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) not enough info (b) 14 (c) 7 (d) 70
27. 27.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
28. 28.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
29. 29.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
30. 30.🧩 Saanvi bought 4 mangoes for ₹80 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹25 (c) ₹80 (d) ₹20
31. 31.🧩 Diya bought 3 notebooks for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹65 (c) ₹180 (d) ₹60
32. 32.🧩 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
33. 33.🧩 Kabir bought 5 notebooks and a lunch box for ₹245 in all. Each notebook cost the same. What did one notebook cost? (a) ₹245 (b) not enough info (c) ₹240 (d) ₹49
34. 34.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, mangoes match (c) yes, it is certain (d) no, check more
35. 35.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) not enough info (d) 7 PM
36. 36.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
37. 37.🧩 Nisha is 11 years old. Saanvi is 8 years older than Nisha. How old is Saanvi? (a) 20 (b) 19 (c) not enough info (d) 8
38. 38.🧩 Diya is 6 years old. Arjun is 9 years older than Diya. How old is Arjun? (a) 16 (b) 9 (c) not enough info (d) 15
39. 39.🧩 A box has 3 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 10 (b) not enough info (c) 21 (d) 28
40. 40.🧩 Ishaan bought 2 pens and a bag for ₹150 in all. Each pen cost the same. What did one pen cost? (a) ₹148 (b) ₹75 (c) not enough info (d) ₹150

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