Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 296 · 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.🧩 Ishaan bought 5 pens for ₹300 in all. Each pen cost the same. What did one pen cost? (a) ₹300 (b) ₹65 (c) not enough info (d) ₹60
2. 2.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
3. 3.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 5 PM (d) not enough info
4. 4.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
5. 5.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
6. 6.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
7. 7.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) the page number (d) your handwriting
8. 8.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
9. 9.🧩 Kabir bought 6 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹15 (b) ₹10 (c) not enough info (d) ₹60
10. 10.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
11. 11.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
12. 12.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
13. 13.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
14. 14.🧩 Ananya bought 4 pens and a lunch box for ₹240 in all. Each pen cost the same. What did one pen cost? (a) ₹236 (b) ₹240 (c) not enough info (d) ₹60
15. 15.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) facts that support it (d) a loud opinion
16. 16.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) True (b) False
17. 17.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 6 (b) 12 (c) 60 (d) not enough info
18. 18.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 9 PM (c) not enough info (d) 8 PM
19. 19.🧩 A box has 8 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) not enough info (b) 36 (c) 32 (d) 12
20. 20.🥭 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) yes, it is certain (c) no mango is sweet (d) no, check more
21. 21.🧩 Ishaan is 9 years old. Rohan is 6 years older than Ishaan. How old is Rohan? (a) 15 (b) 16 (c) not enough info (d) 6
22. 22.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
23. 23.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) 2 PM (b) not enough info (c) 5 PM (d) 6 PM
24. 24.🧩 A box has 6 rows of mangoes, with 9 in each row. How many mangoes are in the box? (a) 15 (b) 63 (c) 54 (d) not enough info
25. 25.🧩 Saanvi is 9 years old. Meera is older than Saanvi. How old is Meera? (a) 14 (b) 10 (c) not enough info (d) 11
26. 26.🧩 Meera bought 4 notebooks and a cap for ₹120 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹30 (c) ₹120 (d) ₹116
27. 27.🧩 Meera is 7 years old. Diya is 9 years older than Meera. How old is Diya? (a) 9 (b) 17 (c) not enough info (d) 16
28. 28.🧩 Ishaan bought 5 kites for ₹300 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹65 (c) ₹300 (d) ₹60
29. 29.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) dogs hate you (c) all dogs are mean (d) never see dogs
30. 30.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
31. 31.🧩 Nisha bought 3 notebooks for ₹105 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) ₹35 (c) not enough info (d) ₹105
32. 32.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 7 PM (c) 8 PM (d) not enough info
33. 33.🧩 Vihaan is 6 years old. Saanvi is older than Vihaan. How old is Saanvi? (a) 11 (b) not enough info (c) 8 (d) 7
34. 34.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
35. 35.🧩 Nisha bought 5 mangoes and a water bottle for ₹230 in all. Each mango cost the same. What did one mango cost? (a) ₹230 (b) ₹225 (c) ₹46 (d) not enough info
36. 36.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
37. 37.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
38. 38.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
39. 39.🧩 Meera bought 3 kites for ₹105 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) ₹105 (c) ₹35 (d) not enough info
40. 40.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False

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