Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 356 · 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.🧩 Meera bought 3 pens for ₹165 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹165 (c) ₹60 (d) ₹55
2. 2.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
3. 3.🧩 Kabir bought 2 markers and a water bottle for ₹130 in all. Each marker cost the same. What did one marker cost? (a) ₹128 (b) ₹65 (c) ₹130 (d) not enough info
4. 4.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) asking your pet (d) guessing
6. 6.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) to be sure of results (d) for fun only
7. 7.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 8 PM (c) 6 PM (d) not enough info
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.🥭 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
10. 10.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
11. 11.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
12. 12.🧩 Vihaan is 7 years old. Meera is 5 years older than Vihaan. How old is Meera? (a) not enough info (b) 5 (c) 13 (d) 12
13. 13.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) 6 PM (d) not enough info
14. 14.🧩 A box has 6 rows of apples, with 6 in each row. How many apples are in the box? (a) 42 (b) 36 (c) not enough info (d) 12
15. 15.🧩 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
16. 16.🧩 Kabir bought 3 kites and a bag for ₹220 in all. Each kite cost the same. What did one kite cost? (a) ₹220 (b) not enough info (c) ₹217 (d) ₹73
17. 17.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
18. 18.🧩 Nisha is 10 years old. Saanvi is older than Nisha. How old is Saanvi? (a) not enough info (b) 15 (c) 12 (d) 11
19. 19.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
20. 20.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
21. 21.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
22. 22.🧩 Tara is 9 years old. Meera is 4 years older than Tara. How old is Meera? (a) 14 (b) 13 (c) 4 (d) not enough info
23. 23.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
24. 24.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 6 PM (c) 4 PM (d) 5 PM
25. 25.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 8 (b) 40 (c) not enough info (d) 4
26. 26.🐕 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
27. 27.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
28. 28.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
29. 29.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
30. 30.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
31. 31.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
32. 32.🧩 Diya is 6 years old. Tara is older than Diya. How old is Tara? (a) 7 (b) 11 (c) 8 (d) not enough info
33. 33.🧩 Diya bought 2 balls and a water bottle for ₹210 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹208 (c) ₹105 (d) ₹210
34. 34.🧩 Nisha bought 3 notebooks and a cap for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹117 (b) ₹120 (c) not enough info (d) ₹40
35. 35.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 80 (b) 16 (c) 8 (d) not enough info
36. 36.🧩 Vihaan bought 3 notebooks for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹35 (b) ₹30 (c) not enough info (d) ₹90
37. 37.🧩 Aarav bought 3 notebooks and a bag for ₹50 in all. Each notebook cost the same. What did one notebook cost? (a) ₹47 (b) ₹50 (c) not enough info (d) ₹16
38. 38.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
39. 39.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 70 (b) 7 (c) 14 (d) not enough info
40. 40.🧩 Rohan is 8 years old. Kabir is older than Rohan. How old is Kabir? (a) 10 (b) 9 (c) 13 (d) not enough info

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