Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 799 · 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: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
2. 2.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) enough evidence (b) not enough evidence
3. 3.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 5 PM (d) 4 PM
4. 4.🐕 One dog barked at you. What is the fair conclusion? (a) all dogs are mean (b) that one dog barked (c) never see dogs (d) dogs hate you
5. 5.📊 Which gives the best evidence about the class’s favourite game? (a) asking the whole class (b) guessing (c) asking one friend (d) asking your pet
6. 6.🧩 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
7. 7.🧩 The film starts at 5 PM and lasts 2 hours. When does it end? (a) 8 PM (b) 5 PM (c) 7 PM (d) not enough info
8. 8.🧩 Vihaan is 6 years old. Arjun is 5 years older than Vihaan. How old is Arjun? (a) not enough info (b) 12 (c) 11 (d) 5
9. 9.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence
10. 10.🧩 Nisha is 11 years old. Rohan is 8 years older than Nisha. How old is Rohan? (a) 20 (b) not enough info (c) 19 (d) 8
11. 11.🧩 Ishaan bought 3 mangoes and a water bottle for ₹185 in all. Each mango cost the same. What did one mango cost? (a) ₹61 (b) ₹182 (c) ₹185 (d) not enough info
12. 12.🧩 A box of oranges has 4 in each row. How many oranges are in the box? (a) 4 (b) 8 (c) not enough info (d) 40
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.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
15. 15.🧩 A box of eggs has 6 in each row. How many eggs are in the box? (a) 6 (b) not enough info (c) 60 (d) 12
16. 16.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 3 PM (b) 2 PM (c) 4 PM (d) not enough info
17. 17.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) 6 (b) 60 (c) not enough info (d) 12
18. 18.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) True (b) False
19. 19.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
20. 20.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
21. 21.🥭 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, check more (c) no mango is sweet (d) yes, it is certain
22. 22.🧩 Kabir bought 6 notebooks and a lunch box for ₹150 in all. Each notebook cost the same. What did one notebook cost? (a) ₹144 (b) ₹150 (c) not enough info (d) ₹25
23. 23.🧩 Aarav bought 6 kites and a bag for ₹150 in all. Each kite cost the same. What did one kite cost? (a) ₹150 (b) ₹25 (c) not enough info (d) ₹144
24. 24.🧩 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
25. 25.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
26. 26.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
27. 27.🧩 A box of apples has 6 in each row. How many apples are in the box? (a) 12 (b) 60 (c) 6 (d) not enough info
28. 28.🧩 Ananya bought 3 notebooks and a lunch box for ₹170 in all. Each notebook cost the same. What did one notebook cost? (a) ₹167 (b) ₹56 (c) ₹170 (d) not enough info
29. 29.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
30. 30.🧩 Saanvi is 9 years old. Tara is older than Saanvi. How old is Tara? (a) 14 (b) 11 (c) not enough info (d) 10
31. 31.🧩 Aarav bought 4 balls for ₹240 in all. Each ball cost the same. What did one ball cost? (a) ₹60 (b) ₹240 (c) not enough info (d) ₹65
32. 32.🧩 Aarav bought 4 notebooks and a water bottle for ₹250 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹250 (c) ₹62 (d) ₹246
33. 33.🔬 Why do scientists repeat an experiment? (a) for fun only (b) to be sure of results (c) to waste time (d) to change answers
34. 34.🧩 Ishaan bought 4 notebooks and a water bottle for ₹160 in all. Each notebook cost the same. What did one notebook cost? (a) ₹156 (b) ₹40 (c) ₹160 (d) not enough info
35. 35.🧩 Kabir bought 6 markers and a bag for ₹180 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹180 (c) ₹30 (d) ₹174
36. 36.🧩 A box of guavas has 9 in each row. How many guavas are in the box? (a) 90 (b) 9 (c) 18 (d) not enough info
37. 37.🧩 Kabir bought 4 notebooks for ₹100 in all. Each notebook cost the same. What did one notebook cost? (a) ₹30 (b) not enough info (c) ₹100 (d) ₹25
38. 38.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) not enough info (b) 3 PM (c) 5 PM (d) 6 PM
39. 39.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) not enough info (b) 8 PM (c) 6 PM (d) 7 PM
40. 40.🧩 A box of eggs has 4 in each row. How many eggs are in the box? (a) 8 (b) 40 (c) 4 (d) not enough info

Free critical thinking lessons, practice and worksheets at talentjr.in/critical-thinking-for-kids