Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 186 · 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: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
2. 2.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
3. 3.🧩 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
4. 4.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
5. 5.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
6. 6.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
7. 7.🧩 A box of apples has 5 in each row. How many apples are in the box? (a) not enough info (b) 5 (c) 10 (d) 50
8. 8.🧩 Vihaan bought 5 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹100 (b) ₹20 (c) ₹25 (d) not enough info
9. 9.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
10. 10.🧩 Rohan is 11 years old. Diya is older than Rohan. How old is Diya? (a) 13 (b) 12 (c) not enough info (d) 16
11. 11.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
12. 12.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) 3 PM (c) 4 PM (d) not enough info
13. 13.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
14. 14.🧩 A box of apples has 4 in each row. How many apples are in the box? (a) 40 (b) 8 (c) not enough info (d) 4
15. 15.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
16. 16.🧩 Kabir bought 6 kites and a lunch box for ₹370 in all. Each kite cost the same. What did one kite cost? (a) ₹364 (b) not enough info (c) ₹61 (d) ₹370
17. 17.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
18. 18.🧩 Before solving a word problem, first check… (a) what facts are given (b) the page number (c) your handwriting (d) the colour of ink
19. 19.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 8 PM
20. 20.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 7 PM (b) 5 PM (c) 8 PM (d) not enough info
21. 21.🧩 Arjun is 12 years old. Saanvi is older than Arjun. How old is Saanvi? (a) 14 (b) 13 (c) not enough info (d) 17
22. 22.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) False (b) True
23. 23.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
24. 24.🧩 Aarav bought 3 mangoes for ₹30 in all. Each mango cost the same. What did one mango cost? (a) ₹30 (b) not enough info (c) ₹15 (d) ₹10
25. 25.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) that one dog barked (d) all dogs are mean
26. 26.🧩 A box has 8 rows of eggs, with 7 in each row. How many eggs are in the box? (a) 15 (b) not enough info (c) 56 (d) 63
27. 27.🧩 Vihaan bought 2 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹50 (c) ₹45 (d) ₹90
28. 28.🧩 The film starts at 2 PM and lasts 2 hours. When does it end? (a) 5 PM (b) not enough info (c) 4 PM (d) 2 PM
29. 29.📊 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
30. 30.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) to change answers (d) for fun only
31. 31.🧩 Aarav bought 5 markers for ₹200 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹200 (c) ₹45 (d) ₹40
32. 32.🧩 Vihaan is 11 years old. Ananya is older than Vihaan. How old is Ananya? (a) 13 (b) 16 (c) not enough info (d) 12
33. 33.🧩 A box of oranges has 7 in each row. How many oranges are in the box? (a) not enough info (b) 7 (c) 14 (d) 70
34. 34.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
35. 35.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
36. 36.🧩 A box has 8 rows of eggs, with 9 in each row. How many eggs are in the box? (a) 17 (b) not enough info (c) 81 (d) 72
37. 37.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
38. 38.🧩 A box has 6 rows of apples, with 4 in each row. How many apples are in the box? (a) 24 (b) not enough info (c) 10 (d) 28
39. 39.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) True (b) False
40. 40.🧩 A box of apples has 7 in each row. How many apples are in the box? (a) 7 (b) 70 (c) 14 (d) not enough info

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