Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 50 · 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.🧩 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
2. 2.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 3 PM (c) not enough info (d) 4 PM
3. 3.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
4. 4.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
5. 5.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
6. 6.🧩 Rohan bought 6 mangoes and a bag for ₹340 in all. Each mango cost the same. What did one mango cost? (a) ₹334 (b) ₹340 (c) ₹56 (d) not enough info
7. 7.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
8. 8.🧩 Rohan bought 5 kites for ₹125 in all. Each kite cost the same. What did one kite cost? (a) ₹125 (b) ₹30 (c) not enough info (d) ₹25
9. 9.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) that one dog barked (c) dogs hate you (d) all dogs are mean
10. 10.🥭 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
11. 11.🧩 Ishaan bought 2 kites and a lunch box for ₹90 in all. Each kite cost the same. What did one kite cost? (a) ₹90 (b) ₹88 (c) ₹45 (d) not enough info
12. 12.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
13. 13.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) True (b) False
14. 14.🧩 The film starts at 6 PM and lasts 3 hours. When does it end? (a) 6 PM (b) 9 PM (c) 10 PM (d) not enough info
15. 15.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
16. 16.🧩 A box has 6 rows of laddoos, with 9 in each row. How many laddoos are in the box? (a) 63 (b) 15 (c) 54 (d) not enough info
17. 17.🧩 A box of laddoos has 4 in each row. How many laddoos are in the box? (a) not enough info (b) 4 (c) 40 (d) 8
18. 18.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
19. 19.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
20. 20.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
21. 21.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
22. 22.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) to change answers (d) for fun only
23. 23.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking one friend (d) asking your pet
24. 24.🧩 Arjun is 10 years old. Rohan is older than Arjun. How old is Rohan? (a) 12 (b) 15 (c) 11 (d) not enough info
25. 25.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
26. 26.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
27. 27.📝 What does “evidence” mean? (a) a loud opinion (b) a rumour (c) facts that support it (d) a guess
28. 28.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) your handwriting (d) the page number
29. 29.🧩 Enough evidence or not? “My friend didn’t like the book, so the book is bad for everyone.” (a) enough evidence (b) not enough evidence
30. 30.🧩 Saanvi is 12 years old. Rohan is older than Saanvi. How old is Rohan? (a) not enough info (b) 14 (c) 17 (d) 13
31. 31.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 5 PM (c) not enough info (d) 4 PM
32. 32.🧩 Tara bought 3 balls for ₹75 in all. Each ball cost the same. What did one ball cost? (a) ₹30 (b) ₹25 (c) ₹75 (d) not enough info
33. 33.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
34. 34.🧩 Tara is 7 years old. Ananya is older than Tara. How old is Ananya? (a) 8 (b) 12 (c) not enough info (d) 9
35. 35.🧩 A box has 8 rows of laddoos, with 5 in each row. How many laddoos are in the box? (a) 45 (b) 13 (c) not enough info (d) 40
36. 36.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
37. 37.🧩 Arjun is 10 years old. Kabir is older than Arjun. How old is Kabir? (a) 15 (b) 12 (c) 11 (d) not enough info
38. 38.🧩 A box has 8 rows of apples, with 9 in each row. How many apples are in the box? (a) 81 (b) not enough info (c) 17 (d) 72
39. 39.🧩 A box has 4 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 40 (b) not enough info (c) 32 (d) 12
40. 40.🧩 Aarav bought 2 balls and a lunch box for ₹90 in all. Each ball cost the same. What did one ball cost? (a) ₹45 (b) ₹90 (c) not enough info (d) ₹88

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