Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 910 · 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.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
2. 2.🧩 A box of eggs has 7 in each row. How many eggs are in the box? (a) 70 (b) 14 (c) 7 (d) not enough info
3. 3.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
4. 4.🧩 Before solving a word problem, first check… (a) your handwriting (b) the colour of ink (c) the page number (d) what facts are given
5. 5.🧩 Arjun is 6 years old. Rohan is older than Arjun. How old is Rohan? (a) 7 (b) 8 (c) 11 (d) not enough info
6. 6.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
7. 7.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
8. 8.🧩 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
9. 9.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) dogs hate you (d) all dogs are mean
10. 10.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) not enough evidence (b) enough evidence
11. 11.🧩 Diya is 6 years old. Vihaan is 6 years older than Diya. How old is Vihaan? (a) 13 (b) 6 (c) 12 (d) not enough info
12. 12.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
13. 13.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) 8 PM (c) 7 PM (d) not enough info
14. 14.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) not enough info (c) 3 PM (d) 6 PM
15. 15.🧩 Diya is 11 years old. Tara is 9 years older than Diya. How old is Tara? (a) not enough info (b) 9 (c) 20 (d) 21
16. 16.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 3 PM
17. 17.🧩 Diya bought 6 markers and a cap for ₹410 in all. Each marker cost the same. What did one marker cost? (a) ₹68 (b) not enough info (c) ₹404 (d) ₹410
18. 18.📝 What does “evidence” mean? (a) a loud opinion (b) a guess (c) facts that support it (d) a rumour
19. 19.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) True (b) False
20. 20.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
21. 21.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
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.🧩 Rohan is 8 years old. Ananya is older than Rohan. How old is Ananya? (a) not enough info (b) 9 (c) 13 (d) 10
24. 24.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
25. 25.🧩 A box has 3 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 10 (b) not enough info (c) 28 (d) 21
26. 26.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
27. 27.🔬 Why do scientists repeat an experiment? (a) to change answers (b) to waste time (c) to be sure of results (d) for fun only
28. 28.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, mangoes match (c) yes, it is certain (d) no, check more
29. 29.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 5 PM
30. 30.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
31. 31.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) 6 PM (d) not enough info
32. 32.🧩 Vihaan is 11 years old. Rohan is 8 years older than Vihaan. How old is Rohan? (a) 20 (b) 8 (c) not enough info (d) 19
33. 33.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
34. 34.🧩 Ishaan bought 6 kites and a cap for ₹180 in all. Each kite cost the same. What did one kite cost? (a) ₹174 (b) not enough info (c) ₹30 (d) ₹180
35. 35.🧩 Kabir bought 2 kites and a bag for ₹60 in all. Each kite cost the same. What did one kite cost? (a) ₹58 (b) not enough info (c) ₹60 (d) ₹30
36. 36.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 4 PM (c) 6 PM (d) not enough info
37. 37.🧩 Ishaan bought 2 balls for ₹100 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹50 (c) ₹100 (d) ₹55
38. 38.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 2 PM
39. 39.🧩 Ananya bought 5 kites for ₹50 in all. Each kite cost the same. What did one kite cost? (a) ₹50 (b) ₹15 (c) not enough info (d) ₹10
40. 40.🧩 Ananya is 11 years old. Vihaan is 5 years older than Ananya. How old is Vihaan? (a) 5 (b) not enough info (c) 17 (d) 16

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