Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 509 · 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.🧩 Rohan is 6 years old. Aarav is older than Rohan. How old is Aarav? (a) 11 (b) 8 (c) not enough info (d) 7
2. 2.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
3. 3.🧩 Arjun bought 5 balls and a water bottle for ₹255 in all. Each ball cost the same. What did one ball cost? (a) not enough info (b) ₹250 (c) ₹255 (d) ₹51
4. 4.📊 Which gives the best evidence about the class’s favourite game? (a) asking your pet (b) asking the whole class (c) asking one friend (d) guessing
5. 5.True or false: “My friend didn’t like the book, so the book is bad for everyone.” does not give enough evidence. (a) False (b) True
6. 6.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) not enough info (c) 5 PM (d) 6 PM
7. 7.🐕 One dog barked at you. What is the fair conclusion? (a) never see dogs (b) dogs hate you (c) that one dog barked (d) all dogs are mean
8. 8.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 4 PM (b) not enough info (c) 5 PM (d) 3 PM
9. 9.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
10. 10.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
11. 11.🧩 Before solving a word problem, first check… (a) the page number (b) what facts are given (c) your handwriting (d) the colour of ink
12. 12.True or false: “We asked all 30 classmates; 25 chose the zoo trip.” does not give enough evidence. (a) False (b) True
13. 13.🧩 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
14. 14.True or false: “We tried the new route for 10 days, and it was faster every day.” gives enough evidence. (a) False (b) True
15. 15.🧩 The film starts at 6 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 9 PM (c) not enough info (d) 8 PM
16. 16.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
17. 17.True or false: “It rained on my birthday once, so it always rains on birthdays.” does not give enough evidence. (a) False (b) True
18. 18.🧩 Vihaan is 11 years old. Arjun is older than Vihaan. How old is Arjun? (a) not enough info (b) 13 (c) 12 (d) 16
19. 19.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) enough evidence (b) not enough evidence
20. 20.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) not enough evidence (b) enough evidence
21. 21.🧩 Kabir is 6 years old. Aarav is older than Kabir. How old is Aarav? (a) 11 (b) 8 (c) 7 (d) not enough info
22. 22.🧩 Meera is 9 years old. Aarav is 3 years older than Meera. How old is Aarav? (a) 3 (b) not enough info (c) 13 (d) 12
23. 23.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
24. 24.🧩 A box has 3 rows of guavas, with 8 in each row. How many guavas are in the box? (a) 11 (b) 24 (c) not enough info (d) 32
25. 25.🧩 Rohan bought 6 notebooks for ₹270 in all. Each notebook cost the same. What did one notebook cost? (a) not enough info (b) ₹50 (c) ₹45 (d) ₹270
26. 26.🧩 Meera bought 6 notebooks and a lunch box for ₹280 in all. Each notebook cost the same. What did one notebook cost? (a) ₹280 (b) not enough info (c) ₹274 (d) ₹46
27. 27.🧩 The film starts at 3 PM. It is a long film. When does it end? (a) not enough info (b) 4 PM (c) 6 PM (d) 5 PM
28. 28.📝 What does “evidence” mean? (a) facts that support it (b) a guess (c) a loud opinion (d) a rumour
29. 29.🧩 A box has 4 rows of laddoos, with 4 in each row. How many laddoos are in the box? (a) 20 (b) 16 (c) not enough info (d) 8
30. 30.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
31. 31.🧩 Tara bought 6 markers and a cap for ₹290 in all. Each marker cost the same. What did one marker cost? (a) not enough info (b) ₹290 (c) ₹48 (d) ₹284
32. 32.🧩 Arjun is 12 years old. Meera is older than Arjun. How old is Meera? (a) 13 (b) 14 (c) 17 (d) not enough info
33. 33.🧩 A box has 8 rows of mangoes, with 8 in each row. How many mangoes are in the box? (a) not enough info (b) 16 (c) 72 (d) 64
34. 34.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
35. 35.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 3 PM (b) not enough info (c) 6 PM (d) 5 PM
36. 36.🧩 Nisha bought 2 notebooks and a bag for ₹140 in all. Each notebook cost the same. What did one notebook cost? (a) ₹140 (b) ₹70 (c) ₹138 (d) not enough info
37. 37.True or false: “A dog barked at me once, so all dogs are mean.” does not give enough evidence. (a) False (b) True
38. 38.🥭 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
39. 39.🧩 Aarav bought 6 markers and a cap for ₹370 in all. Each marker cost the same. What did one marker cost? (a) ₹61 (b) ₹364 (c) ₹370 (d) not enough info
40. 40.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False

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