Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 851 · 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.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) that one dog barked (d) all dogs are mean
2. 2.📊 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
3. 3.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) for fun only (d) to change answers
4. 4.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
5. 5.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) 18 (b) not enough info (c) 90 (d) 9
6. 6.🧩 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
7. 7.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
8. 8.🧩 Ananya bought 6 balls and a cap for ₹350 in all. Each ball cost the same. What did one ball cost? (a) ₹58 (b) not enough info (c) ₹350 (d) ₹344
9. 9.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 7 PM (b) not enough info (c) 6 PM (d) 5 PM
10. 10.🧩 Ananya bought 3 balls and a water bottle for ₹125 in all. Each ball cost the same. What did one ball cost? (a) ₹41 (b) ₹125 (c) ₹122 (d) not enough info
11. 11.🧩 Nisha is 7 years old. Kabir is older than Nisha. How old is Kabir? (a) not enough info (b) 8 (c) 12 (d) 9
12. 12.🧩 Arjun bought 2 notebooks and a bag for ₹90 in all. Each notebook cost the same. What did one notebook cost? (a) ₹90 (b) ₹88 (c) ₹45 (d) not enough info
13. 13.🧩 Ananya bought 4 pens for ₹220 in all. Each pen cost the same. What did one pen cost? (a) ₹55 (b) ₹60 (c) ₹220 (d) not enough info
14. 14.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 5 PM (b) not enough info (c) 8 PM (d) 9 PM
15. 15.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
16. 16.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
17. 17.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
18. 18.🧩 Diya bought 3 pens for ₹120 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹120 (c) ₹45 (d) ₹40
19. 19.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
20. 20.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 50 (b) 10 (c) 5 (d) not enough info
21. 21.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 14 (b) 7 (c) 70 (d) not enough info
22. 22.🧩 Tara bought 4 balls and a water bottle for ₹160 in all. Each ball cost the same. What did one ball cost? (a) ₹156 (b) ₹160 (c) not enough info (d) ₹40
23. 23.🧩 Nisha bought 6 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) not enough info (c) ₹15 (d) ₹10
24. 24.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
25. 25.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
26. 26.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) 60 (b) not enough info (c) 6 (d) 12
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) False (b) True
28. 28.🧩 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
29. 29.🧩 Meera is 10 years old. Kabir is older than Meera. How old is Kabir? (a) 11 (b) 12 (c) not enough info (d) 15
30. 30.🧩 Ananya bought 6 kites for ₹360 in all. Each kite cost the same. What did one kite cost? (a) ₹65 (b) ₹360 (c) not enough info (d) ₹60
31. 31.🧩 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) 64 (d) 15
32. 32.🥭 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
33. 33.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a loud opinion (d) a guess
34. 34.🧩 A box of mangoes has 5 in each row. How many mangoes are in the box? (a) 5 (b) 10 (c) not enough info (d) 50
35. 35.🧩 Saanvi is 7 years old. Meera is 6 years older than Saanvi. How old is Meera? (a) not enough info (b) 14 (c) 13 (d) 6
36. 36.🧩 A box of oranges has 9 in each row. How many oranges are in the box? (a) 9 (b) 90 (c) not enough info (d) 18
37. 37.🧩 Meera is 9 years old. Aarav is 9 years older than Meera. How old is Aarav? (a) 9 (b) not enough info (c) 19 (d) 18
38. 38.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
39. 39.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
40. 40.🧩 A box has 5 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 20 (b) not enough info (c) 24 (d) 9

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