Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 880 · 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? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
2. 2.🧩 Aarav is 7 years old. Ananya is older than Aarav. How old is Ananya? (a) 12 (b) not enough info (c) 8 (d) 9
3. 3.🧩 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
4. 4.📝 What does “evidence” mean? (a) a guess (b) facts that support it (c) a loud opinion (d) a rumour
5. 5.🧩 Diya bought 4 kites and a cap for ₹210 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹206 (c) ₹210 (d) ₹52
6. 6.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
7. 7.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
8. 8.🧩 The film starts at 4 PM and lasts 2 hours. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 7 PM
9. 9.🧩 A box of oranges has 6 in each row. How many oranges are in the box? (a) not enough info (b) 60 (c) 12 (d) 6
10. 10.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
11. 11.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
12. 12.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
13. 13.🧩 Before solving a word problem, first check… (a) the page number (b) your handwriting (c) what facts are given (d) the colour of ink
14. 14.🧩 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
15. 15.🧩 Diya is 11 years old. Vihaan is older than Diya. How old is Vihaan? (a) 16 (b) not enough info (c) 12 (d) 13
16. 16.🧩 Ishaan is 10 years old. Rohan is 6 years older than Ishaan. How old is Rohan? (a) 17 (b) 6 (c) 16 (d) not enough info
17. 17.🧩 Meera is 12 years old. Rohan is 3 years older than Meera. How old is Rohan? (a) 3 (b) 15 (c) 16 (d) not enough info
18. 18.🧩 Vihaan bought 6 pens for ₹90 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) not enough info (c) ₹90 (d) ₹15
19. 19.🥭 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 mango is sweet (c) yes, mangoes match (d) no, check more
20. 20.🧩 A box has 7 rows of apples, with 5 in each row. How many apples are in the box? (a) 35 (b) not enough info (c) 12 (d) 40
21. 21.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) not enough info (b) 8 PM (c) 6 PM (d) 7 PM
22. 22.🧩 Ishaan bought 6 kites and a lunch box for ₹150 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹150 (c) ₹25 (d) ₹144
23. 23.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) all dogs are mean (c) dogs hate you (d) that one dog barked
24. 24.🧩 Diya bought 5 mangoes for ₹75 in all. Each mango cost the same. What did one mango cost? (a) ₹75 (b) not enough info (c) ₹20 (d) ₹15
25. 25.🧩 Meera bought 3 mangoes for ₹60 in all. Each mango cost the same. What did one mango cost? (a) ₹25 (b) not enough info (c) ₹20 (d) ₹60
26. 26.🧩 Aarav bought 6 kites and a water bottle for ₹150 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹144 (c) ₹150 (d) ₹25
27. 27.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) asking your pet (c) guessing (d) asking one friend
28. 28.🧩 Rohan bought 5 pens and a cap for ₹80 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹16 (c) ₹80 (d) ₹75
29. 29.🧩 Diya bought 2 mangoes for ₹30 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹30 (c) ₹20 (d) ₹15
30. 30.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
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.🧩 Ananya is 11 years old. Rohan is 2 years older than Ananya. How old is Rohan? (a) 2 (b) 13 (c) 14 (d) not enough info
33. 33.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) 3 PM (b) 7 PM (c) not enough info (d) 6 PM
34. 34.🧩 Vihaan bought 3 kites and a water bottle for ₹140 in all. Each kite cost the same. What did one kite cost? (a) ₹140 (b) not enough info (c) ₹46 (d) ₹137
35. 35.🧩 Vihaan bought 2 pens for ₹100 in all. Each pen cost the same. What did one pen cost? (a) ₹55 (b) not enough info (c) ₹50 (d) ₹100
36. 36.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
37. 37.True or false: “We tried the new route for 10 days, and it was faster every day.” does not give enough evidence. (a) False (b) True
38. 38.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to be sure of results (d) to waste time
39. 39.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
40. 40.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False

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