Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 112 · 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.🧩 Diya is 12 years old. Meera is 6 years older than Diya. How old is Meera? (a) not enough info (b) 6 (c) 18 (d) 19
2. 2.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
3. 3.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) never see dogs (d) all dogs are mean
4. 4.🧩 Tara is 6 years old. Rohan is older than Tara. How old is Rohan? (a) 8 (b) 11 (c) 7 (d) not enough info
5. 5.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
6. 6.🥭 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
7. 7.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
8. 8.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
9. 9.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 40 (b) 8 (c) 4 (d) not enough info
10. 10.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
11. 11.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
12. 12.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to change answers (c) to waste time (d) to be sure of results
13. 13.🧩 Kabir bought 4 markers for ₹240 in all. Each marker cost the same. What did one marker cost? (a) ₹240 (b) not enough info (c) ₹65 (d) ₹60
14. 14.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
15. 15.🧩 A box has 8 rows of mangoes, with 6 in each row. How many mangoes are in the box? (a) 54 (b) not enough info (c) 14 (d) 48
16. 16.🧩 Tara bought 3 notebooks for ₹45 in all. Each notebook cost the same. What did one notebook cost? (a) ₹15 (b) ₹20 (c) not enough info (d) ₹45
17. 17.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 3 PM (c) not enough info (d) 2 PM
18. 18.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a guess (d) a loud opinion
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.🧩 Meera bought 3 markers for ₹105 in all. Each marker cost the same. What did one marker cost? (a) ₹40 (b) not enough info (c) ₹105 (d) ₹35
21. 21.🧩 Kabir bought 4 kites for ₹220 in all. Each kite cost the same. What did one kite cost? (a) ₹60 (b) ₹220 (c) ₹55 (d) not enough info
22. 22.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
23. 23.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
24. 24.🧩 Aarav is 12 years old. Saanvi is older than Aarav. How old is Saanvi? (a) 17 (b) not enough info (c) 13 (d) 14
25. 25.🧩 Rohan 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
26. 26.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
27. 27.🧩 Diya bought 6 markers for ₹210 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹35 (c) ₹40 (d) ₹210
28. 28.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 4 PM
29. 29.🧩 Aarav bought 6 notebooks for ₹240 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹40 (c) ₹45 (d) ₹240
30. 30.🧩 Meera bought 5 markers and a bag for ₹155 in all. Each marker cost the same. What did one marker cost? (a) ₹155 (b) not enough info (c) ₹31 (d) ₹150
31. 31.🧩 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
32. 32.🧩 Nisha bought 6 balls and a lunch box for ₹370 in all. Each ball cost the same. What did one ball cost? (a) ₹364 (b) ₹370 (c) not enough info (d) ₹61
33. 33.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 9 PM (d) 8 PM
34. 34.🧩 A box of guavas has 7 in each row. How many guavas are in the box? (a) not enough info (b) 7 (c) 14 (d) 70
35. 35.🧩 Arjun bought 3 balls and a lunch box for ₹190 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹190 (c) ₹63 (d) ₹187
36. 36.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 3 PM
37. 37.🧩 A box has 5 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 54 (b) not enough info (c) 14 (d) 45
38. 38.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
39. 39.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 7 PM (c) not enough info (d) 6 PM
40. 40.🧩 Rohan is 9 years old. Saanvi is older than Rohan. How old is Saanvi? (a) 14 (b) not enough info (c) 10 (d) 11

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