Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 382 · 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.📝 What does “evidence” mean? (a) a guess (b) a loud opinion (c) a rumour (d) facts that support it
2. 2.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 6 PM (c) 7 PM (d) not enough info
3. 3.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
4. 4.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
5. 5.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) 12 (b) 6 (c) not enough info (d) 60
6. 6.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) not enough info (b) 9 PM (c) 5 PM (d) 8 PM
7. 7.🧩 Meera bought 6 markers and a water bottle for ₹330 in all. Each marker cost the same. What did one marker cost? (a) ₹55 (b) ₹330 (c) ₹324 (d) not enough info
8. 8.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) no, check more (c) yes, mangoes match (d) no mango is sweet
9. 9.🧩 A box has 8 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 64 (b) 72 (c) 16 (d) not enough info
10. 10.🧩 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
11. 11.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
12. 12.🧩 Before solving a word problem, first check… (a) what facts are given (b) your handwriting (c) the page number (d) the colour of ink
13. 13.🧩 Kabir bought 5 pens for ₹125 in all. Each pen cost the same. What did one pen cost? (a) ₹125 (b) ₹30 (c) not enough info (d) ₹25
14. 14.🧩 A box has 4 rows of guavas, with 9 in each row. How many guavas are in the box? (a) 36 (b) 45 (c) not enough info (d) 13
15. 15.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 12 (b) not enough info (c) 6 (d) 60
16. 16.🧩 Arjun is 11 years old. Saanvi is 6 years older than Arjun. How old is Saanvi? (a) 17 (b) 6 (c) not enough info (d) 18
17. 17.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) 8 PM (d) not enough info
18. 18.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 18 (b) 90 (c) 9 (d) not enough info
19. 19.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
20. 20.🧩 Meera bought 3 markers for ₹180 in all. Each marker cost the same. What did one marker cost? (a) ₹65 (b) not enough info (c) ₹180 (d) ₹60
21. 21.🧩 A box has 3 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) not enough info (b) 7 (c) 12 (d) 16
22. 22.🧩 Aarav bought 4 markers for ₹100 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹30 (c) ₹25 (d) ₹100
23. 23.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking one friend (c) asking your pet (d) guessing
24. 24.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 4 PM (d) 5 PM
25. 25.🧩 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
26. 26.🧩 Vihaan is 6 years old. Diya is 7 years older than Vihaan. How old is Diya? (a) 7 (b) 13 (c) not enough info (d) 14
27. 27.🧩 Saanvi bought 6 balls for ₹360 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹65 (d) ₹360
28. 28.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
29. 29.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
30. 30.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
31. 31.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) never see dogs (d) that one dog barked
32. 32.🧩 Tara is 8 years old. Vihaan is older than Tara. How old is Vihaan? (a) 10 (b) 9 (c) 13 (d) not enough info
33. 33.🧩 Kabir is 11 years old. Meera is 2 years older than Kabir. How old is Meera? (a) 14 (b) not enough info (c) 13 (d) 2
34. 34.🧩 Diya is 7 years old. Arjun is 3 years older than Diya. How old is Arjun? (a) 11 (b) 10 (c) not enough info (d) 3
35. 35.🧩 Arjun bought 2 mangoes and a water bottle for ₹80 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹40 (c) ₹78 (d) ₹80
36. 36.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
37. 37.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
38. 38.🧩 Ishaan bought 4 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹60 (b) ₹15 (c) ₹20 (d) not enough info
39. 39.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
40. 40.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 9 PM (b) not enough info (c) 7 PM (d) 8 PM

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