Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 676 · 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.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 6 PM (d) 7 PM
2. 2.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
3. 3.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 16 (b) 80 (c) not enough info (d) 8
4. 4.🧩 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
5. 5.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
6. 6.📊 Which gives the best evidence about the class’s favourite game? (a) guessing (b) asking your pet (c) asking the whole class (d) asking one friend
7. 7.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
8. 8.🧩 A box has 8 rows of apples, with 6 in each row. How many apples are in the box? (a) 14 (b) 54 (c) not enough info (d) 48
9. 9.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
10. 10.🧩 A box of guavas has 5 in each row. How many guavas are in the box? (a) 10 (b) not enough info (c) 5 (d) 50
11. 11.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 3 PM (c) not enough info (d) 5 PM
12. 12.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
13. 13.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) for fun only (d) to waste time
14. 14.🧩 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
15. 15.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) yes, it is certain (c) no, check more (d) no mango is sweet
16. 16.🧩 Arjun is 8 years old. Nisha is older than Arjun. How old is Nisha? (a) 13 (b) not enough info (c) 9 (d) 10
17. 17.🧩 Arjun bought 6 balls for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹120 (b) not enough info (c) ₹25 (d) ₹20
18. 18.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) 8 PM (c) not enough info (d) 7 PM
19. 19.🧩 Rohan bought 3 pens and a bag for ₹140 in all. Each pen cost the same. What did one pen cost? (a) ₹137 (b) ₹140 (c) not enough info (d) ₹46
20. 20.📝 What does “evidence” mean? (a) a rumour (b) a guess (c) a loud opinion (d) facts that support it
21. 21.🧩 Vihaan is 9 years old. Diya is 3 years older than Vihaan. How old is Diya? (a) not enough info (b) 13 (c) 12 (d) 3
22. 22.🧩 Tara is 7 years old. Diya is 6 years older than Tara. How old is Diya? (a) 13 (b) not enough info (c) 14 (d) 6
23. 23.True or false: “One mango in the box was sour, so all the mangoes are sour.” does not give enough evidence. (a) True (b) False
24. 24.🧩 Ananya is 11 years old. Vihaan is older than Ananya. How old is Vihaan? (a) 12 (b) 13 (c) 16 (d) not enough info
25. 25.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
26. 26.🧩 Nisha bought 4 notebooks for ₹200 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹200 (c) ₹55 (d) ₹50
27. 27.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) never see dogs (c) dogs hate you (d) all dogs are mean
28. 28.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
29. 29.🧩 A box has 6 rows of apples, with 8 in each row. How many apples are in the box? (a) not enough info (b) 14 (c) 48 (d) 56
30. 30.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) your handwriting (d) the colour of ink
31. 31.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
32. 32.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
33. 33.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
34. 34.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 8 PM (b) not enough info (c) 6 PM (d) 9 PM
35. 35.🧩 Kabir bought 2 kites for ₹40 in all. Each kite cost the same. What did one kite cost? (a) ₹20 (b) ₹25 (c) not enough info (d) ₹40
36. 36.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) True (b) False
37. 37.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
38. 38.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
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.🧩 Meera bought 3 kites for ₹45 in all. Each kite cost the same. What did one kite cost? (a) ₹15 (b) ₹45 (c) not enough info (d) ₹20

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