Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 346 · 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.📝 What does “evidence” mean? (a) facts that support it (b) a rumour (c) a guess (d) a loud opinion
2. 2.🧩 A box has 6 rows of oranges, with 8 in each row. How many oranges are in the box? (a) 48 (b) not enough info (c) 56 (d) 14
3. 3.🧩 Kabir bought 3 pens for ₹60 in all. Each pen cost the same. What did one pen cost? (a) ₹25 (b) ₹60 (c) not enough info (d) ₹20
4. 4.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
5. 5.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) True (b) False
6. 6.🧩 The film starts at 4 PM and lasts 3 hours. When does it end? (a) not enough info (b) 4 PM (c) 7 PM (d) 8 PM
7. 7.🧩 The film starts at 3 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 4 PM (c) not enough info (d) 3 PM
8. 8.🧩 A box of eggs has 9 in each row. How many eggs are in the box? (a) not enough info (b) 18 (c) 90 (d) 9
9. 9.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) asking your pet (c) asking the whole class (d) guessing
10. 10.🧩 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
11. 11.🧩 Enough evidence or not? “We tested 20 seeds, and 18 of them sprouted.” (a) enough evidence (b) not enough evidence
12. 12.🧩 Enough evidence or not? “We tried the new route for 10 days, and it was faster every day.” (a) not enough evidence (b) enough evidence
13. 13.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) 4 PM (b) 5 PM (c) not enough info (d) 6 PM
14. 14.🧩 The film starts at 3 PM and lasts 3 hours. When does it end? (a) not enough info (b) 7 PM (c) 6 PM (d) 3 PM
15. 15.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) enough evidence (b) not enough evidence
16. 16.🧩 Arjun is 9 years old. Kabir is 7 years older than Arjun. How old is Kabir? (a) 7 (b) 17 (c) not enough info (d) 16
17. 17.🧩 Tara bought 3 notebooks for ₹105 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) not enough info (c) ₹105 (d) ₹35
18. 18.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
19. 19.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) all dogs are mean (c) never see dogs (d) that one dog barked
20. 20.True or false: “My friend didn’t like the book, so the book is bad for everyone.” gives enough evidence. (a) True (b) False
21. 21.🧩 A box has 7 rows of eggs, with 6 in each row. How many eggs are in the box? (a) 42 (b) 48 (c) not enough info (d) 13
22. 22.🧩 Kabir bought 2 pens for ₹30 in all. Each pen cost the same. What did one pen cost? (a) ₹30 (b) ₹15 (c) ₹20 (d) not enough info
23. 23.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
24. 24.🧩 A box of guavas has 8 in each row. How many guavas are in the box? (a) 8 (b) not enough info (c) 80 (d) 16
25. 25.🧩 A box of guavas has 6 in each row. How many guavas are in the box? (a) not enough info (b) 6 (c) 60 (d) 12
26. 26.🥭 You taste one mango from a box of 50, and it is sweet. Can you be sure all 50 are sweet? (a) yes, it is certain (b) yes, mangoes match (c) no mango is sweet (d) no, check more
27. 27.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
28. 28.🧩 The film starts at 5 PM and lasts 1 hour. When does it end? (a) 5 PM (b) 7 PM (c) not enough info (d) 6 PM
29. 29.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 7 PM (d) 5 PM
30. 30.🧩 Diya is 10 years old. Ishaan is 6 years older than Diya. How old is Ishaan? (a) not enough info (b) 6 (c) 16 (d) 17
31. 31.🧩 Nisha bought 5 notebooks for ₹175 in all. Each notebook cost the same. What did one notebook cost? (a) ₹40 (b) not enough info (c) ₹35 (d) ₹175
32. 32.🧩 Rohan is 11 years old. Kabir is 4 years older than Rohan. How old is Kabir? (a) 4 (b) not enough info (c) 16 (d) 15
33. 33.🧩 Ananya bought 6 markers for ₹300 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹55 (c) ₹300 (d) ₹50
34. 34.🧩 Tara bought 5 kites and a water bottle for ₹345 in all. Each kite cost the same. What did one kite cost? (a) ₹69 (b) ₹345 (c) ₹340 (d) not enough info
35. 35.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) True (b) False
36. 36.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” gives enough evidence. (a) False (b) True
37. 37.🧩 Before solving a word problem, first check… (a) the colour of ink (b) the page number (c) your handwriting (d) what facts are given
38. 38.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
39. 39.🧩 Arjun bought 4 markers for ₹220 in all. Each marker cost the same. What did one marker cost? (a) ₹60 (b) ₹55 (c) not enough info (d) ₹220
40. 40.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) enough evidence (b) not enough evidence

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