Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 536 · 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.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no mango is sweet (c) yes, it is certain (d) no, check more
2. 2.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
3. 3.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 5 PM
4. 4.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
5. 5.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) not enough info (b) 8 (c) 4 (d) 40
6. 6.🧩 Diya is 8 years old. Tara is 7 years older than Diya. How old is Tara? (a) 16 (b) 15 (c) 7 (d) not enough info
7. 7.🧩 Nisha bought 3 kites for ₹45 in all. Each kite cost the same. What did one kite cost? (a) ₹45 (b) ₹20 (c) not enough info (d) ₹15
8. 8.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) guessing (d) asking your pet
9. 9.🧩 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
10. 10.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
11. 11.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) True (b) False
12. 12.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) 70 (b) 14 (c) 7 (d) not enough info
13. 13.🧩 Vihaan is 8 years old. Kabir is older than Vihaan. How old is Kabir? (a) 10 (b) not enough info (c) 13 (d) 9
14. 14.🧩 A box has 7 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) not enough info (b) 48 (c) 13 (d) 42
15. 15.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) not enough info (b) 60 (c) 6 (d) 12
16. 16.🧩 Ishaan bought 5 pens for ₹250 in all. Each pen cost the same. What did one pen cost? (a) ₹55 (b) ₹50 (c) ₹250 (d) not enough info
17. 17.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 2 PM (d) 5 PM
18. 18.🧩 Aarav is 6 years old. Nisha is 2 years older than Aarav. How old is Nisha? (a) 9 (b) 2 (c) 8 (d) not enough info
19. 19.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 4 (b) not enough info (c) 8 (d) 40
20. 20.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
21. 21.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 4 PM
22. 22.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
23. 23.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 8 PM (c) not enough info (d) 7 PM
24. 24.🧩 Kabir bought 6 pens for ₹240 in all. Each pen cost the same. What did one pen cost? (a) ₹240 (b) not enough info (c) ₹45 (d) ₹40
25. 25.🧩 A box has 7 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 56 (b) 15 (c) not enough info (d) 64
26. 26.🧩 Saanvi bought 6 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹15 (c) ₹90 (d) ₹20
27. 27.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) 3 PM (d) not enough info
28. 28.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
29. 29.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
30. 30.🧩 Ishaan is 12 years old. Rohan is older than Ishaan. How old is Rohan? (a) 14 (b) not enough info (c) 13 (d) 17
31. 31.🧩 Vihaan bought 2 balls and a cap for ₹120 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹118 (c) ₹120 (d) ₹60
32. 32.🧩 Kabir bought 4 balls and a bag for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹116 (b) ₹30 (c) not enough info (d) ₹120
33. 33.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
34. 34.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) False (b) True
35. 35.🧩 Ananya is 6 years old. Nisha is older than Ananya. How old is Nisha? (a) 7 (b) 11 (c) not enough info (d) 8
36. 36.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 8 PM (c) 6 PM (d) 7 PM
37. 37.🧩 Saanvi bought 4 notebooks and a lunch box for ₹160 in all. Each notebook cost the same. What did one notebook cost? (a) ₹156 (b) not enough info (c) ₹160 (d) ₹40
38. 38.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) dogs hate you (c) that one dog barked (d) never see dogs
39. 39.🧩 Saanvi bought 2 notebooks for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) ₹60 (b) ₹65 (c) not enough info (d) ₹120
40. 40.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

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