Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 690 · 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.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 16 (b) not enough info (c) 80 (d) 8
2. 2.🧩 Saanvi is 9 years old. Meera is older than Saanvi. How old is Meera? (a) not enough info (b) 10 (c) 11 (d) 14
3. 3.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
4. 4.🧩 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
5. 5.🧩 Rohan is 11 years old. Kabir is 5 years older than Rohan. How old is Kabir? (a) 17 (b) 5 (c) 16 (d) not enough info
6. 6.🧩 Nisha bought 4 notebooks and a bag for ₹230 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹230 (c) ₹226 (d) ₹57
7. 7.🧩 Diya is 11 years old. Rohan is older than Diya. How old is Rohan? (a) not enough info (b) 16 (c) 13 (d) 12
8. 8.🧩 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
9. 9.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
10. 10.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
11. 11.🧩 Nisha bought 4 balls and a bag for ₹100 in all. Each ball cost the same. What did one ball cost? (a) ₹25 (b) ₹96 (c) ₹100 (d) not enough info
12. 12.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
13. 13.🧩 Tara is 7 years old. Diya is older than Tara. How old is Diya? (a) not enough info (b) 9 (c) 8 (d) 12
14. 14.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
15. 15.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 3 PM (c) not enough info (d) 5 PM
16. 16.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
17. 17.🧩 Meera is 7 years old. Ananya is older than Meera. How old is Ananya? (a) 8 (b) not enough info (c) 9 (d) 12
18. 18.🧩 A box of laddoos has 9 in each row. How many laddoos are in the box? (a) 90 (b) 9 (c) not enough info (d) 18
19. 19.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Aarav bought 2 notebooks for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹120 (c) ₹60 (d) ₹65
21. 21.🧩 Diya bought 4 mangoes for ₹40 in all. Each mango cost the same. What did one mango cost? (a) ₹10 (b) not enough info (c) ₹40 (d) ₹15
22. 22.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) for fun only (d) to waste time
23. 23.🧩 A box has 6 rows of guavas, with 4 in each row. How many guavas are in the box? (a) not enough info (b) 28 (c) 24 (d) 10
24. 24.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
25. 25.🧩 Tara is 10 years old. Nisha is 9 years older than Tara. How old is Nisha? (a) not enough info (b) 9 (c) 19 (d) 20
26. 26.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) that one dog barked (d) all dogs are mean
27. 27.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
28. 28.🧩 Tara bought 3 markers for ₹60 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹25 (c) not enough info (d) ₹20
29. 29.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 10 (b) not enough info (c) 50 (d) 5
30. 30.🧩 Meera is 9 years old. Aarav is 7 years older than Meera. How old is Aarav? (a) not enough info (b) 7 (c) 17 (d) 16
31. 31.🧩 A box of laddoos has 7 in each row. How many laddoos are in the box? (a) not enough info (b) 70 (c) 14 (d) 7
32. 32.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
33. 33.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 80 (b) 16 (c) not enough info (d) 8
34. 34.📝 What does “evidence” mean? (a) a rumour (b) facts that support it (c) a guess (d) a loud opinion
35. 35.🧩 A box of oranges has 8 in each row. How many oranges are in the box? (a) 16 (b) 80 (c) 8 (d) not enough info
36. 36.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
37. 37.🧩 Saanvi bought 2 markers and a cap for ₹130 in all. Each marker cost the same. What did one marker cost? (a) ₹65 (b) ₹130 (c) ₹128 (d) not enough info
38. 38.🧩 Rohan is 8 years old. Nisha is older than Rohan. How old is Nisha? (a) 10 (b) not enough info (c) 9 (d) 13
39. 39.🧩 Vihaan bought 4 kites for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹240 (b) not enough info (c) ₹65 (d) ₹60
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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