Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 444 · 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.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
2. 2.🥭 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, check more (d) no mango is sweet
3. 3.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 3 PM (d) 2 PM
4. 4.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
5. 5.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) 8 PM (c) not enough info (d) 7 PM
6. 6.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 3 PM
7. 7.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
8. 8.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
9. 9.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) the colour of ink (d) what facts are given
10. 10.🧩 Vihaan bought 6 kites for ₹240 in all. Each kite cost the same. What did one kite cost? (a) ₹240 (b) ₹45 (c) not enough info (d) ₹40
11. 11.🧩 Ananya is 12 years old. Vihaan is 4 years older than Ananya. How old is Vihaan? (a) 17 (b) 4 (c) not enough info (d) 16
12. 12.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
13. 13.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
14. 14.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
15. 15.🧩 Arjun is 10 years old. Ananya is older than Arjun. How old is Ananya? (a) 11 (b) 15 (c) 12 (d) not enough info
16. 16.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
17. 17.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) all dogs are mean (d) dogs hate you
18. 18.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) False (b) True
19. 19.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
20. 20.🧩 Diya bought 4 markers and a bag for ₹240 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹60 (c) ₹236 (d) ₹240
21. 21.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 5 PM
22. 22.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
23. 23.🧩 Arjun is 11 years old. Tara is 3 years older than Arjun. How old is Tara? (a) not enough info (b) 15 (c) 3 (d) 14
24. 24.🧩 Vihaan bought 2 mangoes for ₹100 in all. Each mango cost the same. What did one mango cost? (a) ₹50 (b) ₹100 (c) not enough info (d) ₹55
25. 25.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 9 PM (c) 8 PM (d) not enough info
26. 26.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
27. 27.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
28. 28.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
29. 29.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
30. 30.🔬 Why do scientists repeat an experiment? (a) to waste time (b) to be sure of results (c) for fun only (d) to change answers
31. 31.🧩 Vihaan is 7 years old. Diya is older than Vihaan. How old is Diya? (a) 8 (b) not enough info (c) 9 (d) 12
32. 32.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 5 PM (d) 3 PM
33. 33.🧩 Ananya is 8 years old. Kabir is 6 years older than Ananya. How old is Kabir? (a) 15 (b) not enough info (c) 14 (d) 6
34. 34.🧩 A box has 8 rows of guavas, with 8 in each row. How many guavas are in the box? (a) not enough info (b) 72 (c) 16 (d) 64
35. 35.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 6 PM (b) not enough info (c) 9 PM (d) 10 PM
36. 36.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) 4 (b) 8 (c) not enough info (d) 40
37. 37.🧩 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
38. 38.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
39. 39.🧩 Diya bought 3 pens and a bag for ₹110 in all. Each pen cost the same. What did one pen cost? (a) ₹107 (b) ₹110 (c) ₹36 (d) not enough info
40. 40.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 9 PM (c) 8 PM (d) not enough info

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