Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 986 · 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.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 8 (b) 16 (c) 80 (d) not enough info
2. 2.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking the whole class (c) guessing (d) asking your pet
3. 3.🧩 Ananya is 6 years old. Aarav is 4 years older than Ananya. How old is Aarav? (a) 4 (b) 11 (c) not enough info (d) 10
4. 4.🧩 Nisha bought 4 balls and a water bottle for ₹110 in all. Each ball cost the same. What did one ball cost? (a) ₹110 (b) not enough info (c) ₹106 (d) ₹27
5. 5.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) never see dogs (c) that one dog barked (d) dogs hate you
6. 6.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) True (b) False
7. 7.🧩 Nisha bought 2 kites for ₹90 in all. Each kite cost the same. What did one kite cost? (a) not enough info (b) ₹45 (c) ₹90 (d) ₹50
8. 8.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
9. 9.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
10. 10.🧩 A box has 8 rows of oranges, with 6 in each row. How many oranges are in the box? (a) 14 (b) 54 (c) not enough info (d) 48
11. 11.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) 4 PM (b) 7 PM (c) 8 PM (d) not enough info
12. 12.🔬 Why do scientists repeat an experiment? (a) to change answers (b) for fun only (c) to waste time (d) to be sure of results
13. 13.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
14. 14.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) no mango is sweet (b) yes, mangoes match (c) yes, it is certain (d) no, check more
15. 15.🧩 Meera bought 5 kites for ₹125 in all. Each kite cost the same. What did one kite cost? (a) ₹25 (b) not enough info (c) ₹30 (d) ₹125
16. 16.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a rumour (d) a loud opinion
17. 17.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
18. 18.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
19. 19.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) your handwriting (d) what facts are given
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.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 8 PM (b) 6 PM (c) 7 PM (d) not enough info
22. 22.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
23. 23.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
24. 24.🧩 A box of eggs has 5 in each row. How many eggs are in the box? (a) 50 (b) 5 (c) 10 (d) not enough info
25. 25.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 3 PM (b) 5 PM (c) 4 PM (d) not enough info
26. 26.🧩 A box of laddoos has 6 in each row. How many laddoos are in the box? (a) 60 (b) 6 (c) not enough info (d) 12
27. 27.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
28. 28.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
29. 29.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 7 (b) 70 (c) not enough info (d) 14
30. 30.🧩 A box has 7 rows of mangoes, with 4 in each row. How many mangoes are in the box? (a) not enough info (b) 32 (c) 28 (d) 11
31. 31.🧩 Tara is 6 years old. Rohan is 7 years older than Tara. How old is Rohan? (a) 14 (b) 7 (c) 13 (d) not enough info
32. 32.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
33. 33.🧩 Rohan bought 4 mangoes for ₹240 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹65 (c) ₹240 (d) ₹60
34. 34.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 5 PM (b) 7 PM (c) 6 PM (d) not enough info
35. 35.🧩 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
36. 36.🧩 Arjun bought 3 markers for ₹90 in all. Each marker cost the same. What did one marker cost? (a) ₹30 (b) ₹35 (c) ₹90 (d) not enough info
37. 37.🧩 Ananya bought 5 mangoes for ₹225 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹45 (c) ₹225 (d) ₹50
38. 38.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) False (b) True
39. 39.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 8 PM
40. 40.🧩 Aarav is 11 years old. Nisha is 4 years older than Aarav. How old is Nisha? (a) 15 (b) 16 (c) 4 (d) not enough info

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