Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 658 · 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.🧩 A box has 8 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 45 (b) 13 (c) not enough info (d) 40
2. 2.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) facts that support it (d) a loud opinion
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? “We tried the new route for 10 days, and it was faster every day.” (a) enough evidence (b) not enough evidence
5. 5.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) not enough evidence (b) enough evidence
6. 6.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 9 PM (b) 6 PM (c) 10 PM (d) not enough info
7. 7.🧩 Diya bought 5 markers for ₹100 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹100 (c) ₹25 (d) ₹20
8. 8.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 10 (b) 5 (c) 50 (d) not enough info
9. 9.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) for fun only (d) to change answers
10. 10.🧩 A box has 3 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 7 (b) 12 (c) 16 (d) not enough info
11. 11.🧩 Rohan is 9 years old. Meera is older than Rohan. How old is Meera? (a) 10 (b) not enough info (c) 11 (d) 14
12. 12.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
13. 13.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
14. 14.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 7 PM (b) 6 PM (c) 8 PM (d) not enough info
15. 15.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
16. 16.🧩 Rohan is 10 years old. Vihaan is older than Rohan. How old is Vihaan? (a) not enough info (b) 12 (c) 15 (d) 11
17. 17.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking one friend (c) guessing (d) asking the whole class
18. 18.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
19. 19.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 4 PM (c) 5 PM (d) not enough info
20. 20.🧩 Vihaan is 12 years old. Arjun is older than Vihaan. How old is Arjun? (a) not enough info (b) 13 (c) 17 (d) 14
21. 21.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
22. 22.🧩 Kabir is 10 years old. Aarav is 6 years older than Kabir. How old is Aarav? (a) 16 (b) 17 (c) not enough info (d) 6
23. 23.🧩 Ananya bought 5 markers and a bag for ₹255 in all. Each marker cost the same. What did one marker cost? (a) ₹255 (b) not enough info (c) ₹51 (d) ₹250
24. 24.🧩 Kabir bought 4 pens for ₹240 in all. Each pen cost the same. What did one pen cost? (a) ₹240 (b) ₹65 (c) not enough info (d) ₹60
25. 25.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) your handwriting (d) the page number
26. 26.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
27. 27.🧩 Nisha bought 3 balls and a bag for ₹165 in all. Each ball cost the same. What did one ball cost? (a) ₹55 (b) ₹162 (c) ₹165 (d) not enough info
28. 28.🧩 Arjun bought 2 balls for ₹90 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹50 (c) ₹90 (d) ₹45
29. 29.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
30. 30.🧩 Rohan is 7 years old. Diya is older than Rohan. How old is Diya? (a) 8 (b) 12 (c) 9 (d) not enough info
31. 31.🧩 A box has 3 rows of oranges, with 5 in each row. How many oranges are in the box? (a) 20 (b) 8 (c) not enough info (d) 15
32. 32.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 4 PM (c) 3 PM (d) not enough info
33. 33.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
34. 34.🧩 Saanvi bought 6 markers for ₹270 in all. Each marker cost the same. What did one marker cost? (a) ₹50 (b) not enough info (c) ₹45 (d) ₹270
35. 35.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
36. 36.🧩 A box has 5 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 10 (b) 25 (c) 30 (d) not enough info
37. 37.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) not enough info (b) 8 PM (c) 4 PM (d) 7 PM
38. 38.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 8 PM (d) 6 PM
39. 39.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
40. 40.🧩 Aarav is 10 years old. Tara is older than Aarav. How old is Tara? (a) 15 (b) 12 (c) not enough info (d) 11

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