Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 877 · 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.🧩 Saanvi is 11 years old. Aarav is older than Saanvi. How old is Aarav? (a) 12 (b) not enough info (c) 16 (d) 13
2. 2.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) 5 PM (c) not enough info (d) 7 PM
3. 3.🧩 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
4. 4.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
5. 5.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to change answers (c) for fun only (d) to waste time
6. 6.🧩 Vihaan bought 4 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹100 (b) not enough info (c) ₹25 (d) ₹30
7. 7.🧩 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
8. 8.🧩 A box of laddoos has 8 in each row. How many laddoos are in the box? (a) 16 (b) 8 (c) not enough info (d) 80
9. 9.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) not enough info (c) 3 PM (d) 5 PM
10. 10.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
11. 11.🧩 Diya bought 6 notebooks and a water bottle for ₹190 in all. Each notebook cost the same. What did one notebook cost? (a) ₹31 (b) not enough info (c) ₹184 (d) ₹190
12. 12.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
13. 13.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) that one dog barked (d) never see dogs
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, it is certain (c) yes, mangoes match (d) no, check more
15. 15.True or false: “One student said the canteen food was cold, so it is always cold.” gives enough evidence. (a) False (b) True
16. 16.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) guessing (d) asking the whole class
17. 17.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
18. 18.🧩 Aarav bought 4 markers for ₹140 in all. Each marker cost the same. What did one marker cost? (a) ₹140 (b) ₹40 (c) ₹35 (d) not enough info
19. 19.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) True (b) False
20. 20.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 7 PM (b) not enough info (c) 5 PM (d) 8 PM
21. 21.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
22. 22.🧩 Kabir bought 3 pens and a bag for ₹90 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹30 (c) ₹87 (d) ₹90
23. 23.🧩 Rohan bought 2 mangoes and a cap for ₹80 in all. Each mango cost the same. What did one mango cost? (a) ₹40 (b) ₹78 (c) ₹80 (d) not enough info
24. 24.🧩 The film starts at 4 PM and lasts 1 hour. When does it end? (a) 4 PM (b) not enough info (c) 6 PM (d) 5 PM
25. 25.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 4 PM (c) 2 PM (d) not enough info
26. 26.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) enough evidence (b) not enough evidence
27. 27.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
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.🧩 Nisha is 7 years old. Saanvi is older than Nisha. How old is Saanvi? (a) not enough info (b) 9 (c) 12 (d) 8
30. 30.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 9 PM (b) 6 PM (c) 8 PM (d) not enough info
31. 31.🧩 Before solving a word problem, first check… (a) the colour of ink (b) your handwriting (c) the page number (d) what facts are given
32. 32.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
33. 33.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
34. 34.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) 3 PM (c) not enough info (d) 5 PM
35. 35.🧩 A box has 6 rows of eggs, with 5 in each row. How many eggs are in the box? (a) 30 (b) 35 (c) 11 (d) not enough info
36. 36.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) False (b) True
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) True (b) False
38. 38.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
39. 39.True or false: “We measured the plant every day for a month; it grew 9 cm.” does not give enough evidence. (a) False (b) True
40. 40.🧩 Ishaan bought 5 mangoes and a lunch box for ₹110 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹105 (c) ₹110 (d) ₹22

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