Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 129 · 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.🧩 Saanvi bought 2 kites and a lunch box for ₹180 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹180 (c) ₹178 (d) ₹90
2. 2.🧩 Vihaan is 7 years old. Saanvi is older than Vihaan. How old is Saanvi? (a) 9 (b) 8 (c) 12 (d) not enough info
3. 3.🧩 Ishaan is 6 years old. Ananya is 6 years older than Ishaan. How old is Ananya? (a) not enough info (b) 12 (c) 6 (d) 13
4. 4.🧩 Diya is 9 years old. Kabir is 4 years older than Diya. How old is Kabir? (a) not enough info (b) 13 (c) 4 (d) 14
5. 5.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
6. 6.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
7. 7.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, mangoes match (c) no mango is sweet (d) yes, it is certain
8. 8.🧩 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
9. 9.📝 What does “evidence” mean? (a) a rumour (b) a loud opinion (c) a guess (d) facts that support it
10. 10.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
11. 11.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
12. 12.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) never see dogs (d) that one dog barked
13. 13.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 6 PM (c) 4 PM (d) not enough info
14. 14.🧩 Aarav bought 6 kites and a bag for ₹120 in all. Each kite cost the same. What did one kite cost? (a) ₹114 (b) ₹120 (c) ₹20 (d) not enough info
15. 15.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
16. 16.🧩 Meera is 7 years old. Ananya is 2 years older than Meera. How old is Ananya? (a) 10 (b) 2 (c) 9 (d) not enough info
17. 17.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) not enough info (b) 6 PM (c) 9 PM (d) 8 PM
18. 18.🧩 Diya bought 6 markers and a bag for ₹300 in all. Each marker cost the same. What did one marker cost? (a) ₹50 (b) ₹300 (c) ₹294 (d) not enough info
19. 19.🧩 Rohan is 10 years old. Diya is older than Rohan. How old is Diya? (a) 11 (b) 15 (c) 12 (d) not enough info
20. 20.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
21. 21.🧩 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
22. 22.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
23. 23.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 6 PM (d) 7 PM
24. 24.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
25. 25.🧩 Vihaan bought 3 balls and a bag for ₹150 in all. Each ball cost the same. What did one ball cost? (a) ₹150 (b) not enough info (c) ₹147 (d) ₹50
26. 26.🧩 Arjun is 9 years old. Aarav is 2 years older than Arjun. How old is Aarav? (a) 2 (b) 12 (c) 11 (d) not enough info
27. 27.🧩 Saanvi bought 2 pens for ₹50 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) not enough info (c) ₹50 (d) ₹30
28. 28.🧩 Aarav bought 3 pens for ₹135 in all. Each pen cost the same. What did one pen cost? (a) ₹135 (b) ₹50 (c) ₹45 (d) not enough info
29. 29.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
30. 30.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 4 (b) 40 (c) 8 (d) not enough info
31. 31.🧩 Arjun bought 3 balls for ₹45 in all. Each ball cost the same. What did one ball cost? (a) ₹15 (b) ₹45 (c) not enough info (d) ₹20
32. 32.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
33. 33.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
34. 34.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
35. 35.🧩 A box has 4 rows of eggs, with 5 in each row. How many eggs are in the box? (a) not enough info (b) 25 (c) 9 (d) 20
36. 36.🧩 Ananya bought 5 notebooks for ₹225 in all. Each notebook cost the same. What did one notebook cost? (a) ₹225 (b) ₹50 (c) not enough info (d) ₹45
37. 37.🧩 A box has 5 rows of apples, with 6 in each row. How many apples are in the box? (a) 36 (b) not enough info (c) 30 (d) 11
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.🧩 Diya bought 4 notebooks for ₹60 in all. Each notebook cost the same. What did one notebook cost? (a) ₹20 (b) not enough info (c) ₹15 (d) ₹60
40. 40.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) 5 (b) 50 (c) 10 (d) not enough info

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