Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 744 · 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) True (b) False
2. 2.🧩 Ananya bought 2 mangoes for ₹50 in all. Each mango cost the same. What did one mango cost? (a) ₹50 (b) ₹30 (c) ₹25 (d) not enough info
3. 3.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) facts that support it (d) a loud opinion
4. 4.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
5. 5.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) not enough info (b) 4 PM (c) 2 PM (d) 3 PM
6. 6.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
7. 7.🧩 Meera is 12 years old. Nisha is 3 years older than Meera. How old is Nisha? (a) not enough info (b) 15 (c) 3 (d) 16
8. 8.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
9. 9.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
10. 10.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no, check more (b) yes, mangoes match (c) no mango is sweet (d) yes, it is certain
11. 11.🧩 A box has 8 rows of laddoos, with 6 in each row. How many laddoos are in the box? (a) 14 (b) 54 (c) 48 (d) not enough info
12. 12.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
13. 13.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
14. 14.🧩 Arjun bought 6 pens and a water bottle for ₹120 in all. Each pen cost the same. What did one pen cost? (a) ₹20 (b) ₹114 (c) ₹120 (d) not enough info
15. 15.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) not enough info (b) 6 PM (c) 7 PM (d) 5 PM
16. 16.🧩 Ishaan bought 2 balls and a water bottle for ₹60 in all. Each ball cost the same. What did one ball cost? (a) ₹58 (b) ₹30 (c) not enough info (d) ₹60
17. 17.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
19. 19.🧩 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
20. 20.🧩 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
21. 21.🐕 One dog barked at you. What is the fair conclusion? (a) that one dog barked (b) all dogs are mean (c) dogs hate you (d) never see dogs
22. 22.🧩 A box of mangoes has 6 in each row. How many mangoes are in the box? (a) 12 (b) 60 (c) not enough info (d) 6
23. 23.🧩 Nisha bought 4 balls and a lunch box for ₹200 in all. Each ball cost the same. What did one ball cost? (a) ₹200 (b) not enough info (c) ₹50 (d) ₹196
24. 24.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) True (b) False
25. 25.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
26. 26.🧩 Vihaan bought 5 kites and a cap for ₹295 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹290 (c) ₹295 (d) ₹59
27. 27.🧩 Saanvi bought 5 pens and a water bottle for ₹105 in all. Each pen cost the same. What did one pen cost? (a) ₹105 (b) not enough info (c) ₹21 (d) ₹100
28. 28.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
29. 29.🧩 Meera bought 4 notebooks and a bag for ₹110 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹110 (c) ₹106 (d) ₹27
30. 30.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking the whole class (d) asking your pet
31. 31.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 3 PM (d) 5 PM
32. 32.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
33. 33.🧩 Rohan bought 3 notebooks and a lunch box for ₹180 in all. Each notebook cost the same. What did one notebook cost? (a) ₹180 (b) ₹177 (c) not enough info (d) ₹60
34. 34.🧩 A box has 5 rows of oranges, with 4 in each row. How many oranges are in the box? (a) 20 (b) 24 (c) not enough info (d) 9
35. 35.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
36. 36.🧩 A box has 7 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) not enough info (b) 49 (c) 14 (d) 56
37. 37.🧩 Nisha bought 5 markers for ₹225 in all. Each marker cost the same. What did one marker cost? (a) ₹50 (b) ₹225 (c) ₹45 (d) not enough info
38. 38.🧩 Before solving a word problem, first check… (a) what facts are given (b) the colour of ink (c) your handwriting (d) the page number
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.🧩 Nisha bought 2 mangoes for ₹60 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹60 (c) ₹35 (d) ₹30

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