Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 188 · 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: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) True (b) False
2. 2.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
3. 3.🥭 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) no, check more (c) yes, it is certain (d) yes, mangoes match
4. 4.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
5. 5.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
6. 6.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
7. 7.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
8. 8.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking the whole class (c) asking your pet (d) asking one friend
9. 9.🧩 A box has 6 rows of guavas, with 9 in each row. How many guavas are in the box? (a) not enough info (b) 54 (c) 15 (d) 63
10. 10.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the colour of ink (d) the page number
11. 11.🧩 Tara bought 2 balls for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) ₹30 (c) ₹35 (d) not enough info
12. 12.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
13. 13.🧩 A box of apples has 8 in each row. How many apples are in the box? (a) 8 (b) not enough info (c) 16 (d) 80
14. 14.🧩 Aarav bought 6 notebooks for ₹330 in all. Each notebook cost the same. What did one notebook cost? (a) ₹330 (b) ₹55 (c) ₹60 (d) not enough info
15. 15.🧩 Aarav bought 3 mangoes for ₹30 in all. Each mango cost the same. What did one mango cost? (a) ₹15 (b) not enough info (c) ₹30 (d) ₹10
16. 16.🧩 Saanvi bought 4 balls and a cap for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹116 (b) not enough info (c) ₹120 (d) ₹30
17. 17.🧩 Meera bought 4 pens for ₹240 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹60 (c) ₹65 (d) ₹240
18. 18.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 10 (b) not enough info (c) 50 (d) 5
19. 19.🧩 Aarav bought 4 kites for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹40 (b) not enough info (c) ₹140 (d) ₹35
20. 20.🧩 Saanvi bought 6 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) ₹90 (c) not enough info (d) ₹15
21. 21.🧩 Rohan bought 5 notebooks for ₹175 in all. Each notebook cost the same. What did one notebook cost? (a) ₹175 (b) ₹35 (c) not enough info (d) ₹40
22. 22.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 9 PM (b) not enough info (c) 8 PM (d) 6 PM
23. 23.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 4 PM
24. 24.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
25. 25.🧩 Kabir bought 4 pens for ₹80 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) ₹25 (c) ₹80 (d) not enough info
26. 26.🧩 Arjun bought 6 mangoes for ₹180 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹30 (c) ₹35 (d) ₹180
27. 27.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) dogs hate you (d) that one dog barked
28. 28.🧩 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
29. 29.🧩 Arjun bought 6 notebooks and a water bottle for ₹270 in all. Each notebook cost the same. What did one notebook cost? (a) ₹270 (b) not enough info (c) ₹264 (d) ₹45
30. 30.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
31. 31.🧩 A box has 7 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 56 (b) 49 (c) not enough info (d) 14
32. 32.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 7 PM (c) not enough info (d) 4 PM
33. 33.🧩 Aarav bought 6 markers and a cap for ₹150 in all. Each marker cost the same. What did one marker cost? (a) ₹25 (b) ₹150 (c) ₹144 (d) not enough info
34. 34.🧩 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
35. 35.🧩 A box has 8 rows of oranges, with 8 in each row. How many oranges are in the box? (a) not enough info (b) 72 (c) 16 (d) 64
36. 36.🧩 Diya is 6 years old. Aarav is older than Diya. How old is Aarav? (a) 11 (b) not enough info (c) 7 (d) 8
37. 37.🧩 A box has 6 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) 28 (b) not enough info (c) 10 (d) 24
38. 38.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) not enough info (b) 10 PM (c) 9 PM (d) 6 PM
39. 39.🧩 Ananya bought 4 markers and a water bottle for ₹130 in all. Each marker cost the same. What did one marker cost? (a) ₹130 (b) not enough info (c) ₹126 (d) ₹32
40. 40.🧩 Diya is 8 years old. Saanvi is 8 years older than Diya. How old is Saanvi? (a) 17 (b) 16 (c) not enough info (d) 8

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