Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 110 · 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: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
2. 2.🧩 A box has 4 rows of apples, with 8 in each row. How many apples are in the box? (a) 12 (b) not enough info (c) 32 (d) 40
3. 3.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 7 PM (b) 6 PM (c) 3 PM (d) not enough info
4. 4.🧩 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
5. 5.🧩 Arjun is 12 years old. Vihaan is older than Arjun. How old is Vihaan? (a) 13 (b) 17 (c) 14 (d) not enough info
6. 6.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
7. 7.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking one friend (c) asking your pet (d) asking the whole class
8. 8.🧩 Saanvi is 9 years old. Ishaan is older than Saanvi. How old is Ishaan? (a) 10 (b) not enough info (c) 11 (d) 14
9. 9.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
10. 10.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
11. 11.🧩 A box has 3 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 28 (b) not enough info (c) 21 (d) 10
12. 12.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) a guess (d) facts that support it
13. 13.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
14. 14.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 7 (b) 70 (c) 14 (d) not enough info
15. 15.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 3 PM (d) 2 PM
16. 16.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
17. 17.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 8 PM
18. 18.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 8 PM (c) 9 PM (d) not enough info
19. 19.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
20. 20.🧩 Vihaan bought 3 markers and a bag for ₹115 in all. Each marker cost the same. What did one marker cost? (a) ₹38 (b) not enough info (c) ₹115 (d) ₹112
21. 21.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
22. 22.🧩 Ishaan bought 4 markers for ₹220 in all. Each marker cost the same. What did one marker cost? (a) ₹220 (b) ₹55 (c) not enough info (d) ₹60
23. 23.🧩 A box has 6 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 10 (b) 24 (c) not enough info (d) 28
24. 24.🧩 Rohan bought 2 pens for ₹40 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) ₹40 (c) ₹20 (d) not enough info
25. 25.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 5 PM (c) 6 PM (d) 2 PM
26. 26.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) that one dog barked (c) all dogs are mean (d) never see dogs
27. 27.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 9 (b) not enough info (c) 90 (d) 18
28. 28.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
29. 29.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
30. 30.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to waste time (d) to change answers
31. 31.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
32. 32.🧩 Saanvi is 9 years old. Aarav is 7 years older than Saanvi. How old is Aarav? (a) 17 (b) 16 (c) 7 (d) not enough info
33. 33.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) your handwriting (d) the page number
34. 34.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
35. 35.🧩 Rohan is 10 years old. Arjun is older than Rohan. How old is Arjun? (a) 15 (b) 12 (c) not enough info (d) 11
36. 36.🧩 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
37. 37.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
38. 38.🧩 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
39. 39.🧩 Kabir bought 5 mangoes for ₹200 in all. Each mango cost the same. What did one mango cost? (a) ₹200 (b) ₹40 (c) not enough info (d) ₹45
40. 40.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence

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