Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 316 · 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.🧩 Aarav bought 5 notebooks for ₹275 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹275 (c) ₹55 (d) ₹60
2. 2.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
3. 3.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking your pet (d) asking the whole class
4. 4.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
5. 5.🧩 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
6. 6.🧩 Tara bought 5 balls for ₹300 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) not enough info (c) ₹65 (d) ₹300
7. 7.🧩 Ishaan bought 3 pens and a water bottle for ₹230 in all. Each pen cost the same. What did one pen cost? (a) ₹227 (b) ₹76 (c) not enough info (d) ₹230
8. 8.🧩 Meera bought 5 markers and a bag for ₹170 in all. Each marker cost the same. What did one marker cost? (a) ₹165 (b) ₹170 (c) ₹34 (d) not enough info
9. 9.🧩 Diya bought 2 notebooks and a water bottle for ₹80 in all. Each notebook cost the same. What did one notebook cost? (a) ₹80 (b) ₹78 (c) ₹40 (d) not enough info
10. 10.🔬 Why do scientists repeat an experiment? (a) to waste time (b) for fun only (c) to be sure of results (d) to change answers
11. 11.🧩 Ananya is 6 years old. Meera is older than Ananya. How old is Meera? (a) not enough info (b) 7 (c) 11 (d) 8
12. 12.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
13. 13.🧩 Ananya bought 2 notebooks for ₹40 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹40 (c) ₹25 (d) ₹20
14. 14.🧩 Before solving a word problem, first check… (a) the colour of ink (b) what facts are given (c) the page number (d) your handwriting
15. 15.🧩 Rohan bought 6 notebooks and a water bottle for ₹210 in all. Each notebook cost the same. What did one notebook cost? (a) ₹35 (b) ₹210 (c) ₹204 (d) not enough info
16. 16.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) False (b) True
17. 17.🧩 Meera bought 5 pens for ₹75 in all. Each pen cost the same. What did one pen cost? (a) ₹15 (b) ₹20 (c) not enough info (d) ₹75
18. 18.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 6 PM
19. 19.🧩 A box has 7 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 14 (b) 49 (c) not enough info (d) 56
20. 20.🧩 Kabir bought 6 kites and a water bottle for ₹320 in all. Each kite cost the same. What did one kite cost? (a) ₹314 (b) ₹53 (c) ₹320 (d) not enough info
21. 21.🧩 Nisha bought 3 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) ₹20 (c) not enough info (d) ₹60
22. 22.🧩 A box has 4 rows of guavas, with 4 in each row. How many guavas are in the box? (a) not enough info (b) 16 (c) 8 (d) 20
23. 23.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 5 PM (c) 3 PM (d) 6 PM
24. 24.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
25. 25.🧩 A box has 6 rows of mangoes, with 5 in each row. How many mangoes are in the box? (a) 11 (b) 30 (c) 35 (d) not enough info
26. 26.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
27. 27.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
28. 28.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
29. 29.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 4 PM (c) 3 PM (d) not enough info
30. 30.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
31. 31.🧩 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
32. 32.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
33. 33.🧩 Ishaan bought 6 markers for ₹120 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹20 (c) ₹25 (d) ₹120
34. 34.🧩 A box has 8 rows of eggs, with 4 in each row. How many eggs are in the box? (a) 32 (b) 36 (c) not enough info (d) 12
35. 35.🧩 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
36. 36.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) not enough info (b) 3 PM (c) 4 PM (d) 5 PM
37. 37.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, mangoes match (b) no mango is sweet (c) yes, it is certain (d) no, check more
38. 38.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
39. 39.🧩 Aarav is 10 years old. Vihaan is older than Aarav. How old is Vihaan? (a) 11 (b) 15 (c) not enough info (d) 12
40. 40.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 7 PM (b) 8 PM (c) not enough info (d) 9 PM

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