Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 199 · 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.🧩 Diya bought 2 balls and a water bottle for ₹110 in all. Each ball cost the same. What did one ball cost? (a) ₹55 (b) ₹108 (c) ₹110 (d) not enough info
2. 2.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) for fun only (c) to waste time (d) to change answers
3. 3.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
4. 4.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 7 PM (d) 9 PM
5. 5.📝 What does “evidence” mean? (a) a guess (b) a rumour (c) a loud opinion (d) facts that support it
6. 6.🧩 A box of oranges has 5 in each row. How many oranges are in the box? (a) 5 (b) 10 (c) 50 (d) not enough info
7. 7.🧩 Arjun bought 3 mangoes for ₹75 in all. Each mango cost the same. What did one mango cost? (a) ₹30 (b) ₹75 (c) ₹25 (d) not enough info
8. 8.🧩 Kabir bought 4 notebooks and a lunch box for ₹300 in all. Each notebook cost the same. What did one notebook cost? (a) ₹300 (b) ₹296 (c) not enough info (d) ₹75
9. 9.🧩 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
10. 10.🧩 The film starts at 3 PM and lasts 2 hours. When does it end? (a) 6 PM (b) 3 PM (c) not enough info (d) 5 PM
11. 11.🧩 Rohan bought 3 mangoes and a water bottle for ₹155 in all. Each mango cost the same. What did one mango cost? (a) ₹152 (b) ₹155 (c) not enough info (d) ₹51
12. 12.True or false: “A dog barked at me once, so all dogs are mean.” gives enough evidence. (a) True (b) False
13. 13.🧩 A box of mangoes has 8 in each row. How many mangoes are in the box? (a) 8 (b) 16 (c) 80 (d) not enough info
14. 14.🧩 Enough evidence or not? “We checked all 40 mangoes in the box; every one was ripe.” (a) not enough evidence (b) enough evidence
15. 15.🐕 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
16. 16.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) False (b) True
17. 17.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
18. 18.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
19. 19.🥭 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) no mango is sweet (c) yes, mangoes match (d) no, check more
20. 20.🧩 A box of mangoes has 7 in each row. How many mangoes are in the box? (a) 7 (b) not enough info (c) 70 (d) 14
21. 21.🧩 Tara is 6 years old. Kabir is older than Tara. How old is Kabir? (a) 7 (b) not enough info (c) 8 (d) 11
22. 22.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
23. 23.🧩 Ishaan is 6 years old. Vihaan is 9 years older than Ishaan. How old is Vihaan? (a) not enough info (b) 16 (c) 15 (d) 9
24. 24.📊 Which gives the best evidence about the class’s favourite game? (a) asking one friend (b) guessing (c) asking the whole class (d) asking your pet
25. 25.🧩 Arjun is 9 years old. Kabir is older than Arjun. How old is Kabir? (a) 11 (b) 14 (c) 10 (d) not enough info
26. 26.🧩 Before solving a word problem, first check… (a) the page number (b) the colour of ink (c) your handwriting (d) what facts are given
27. 27.🧩 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
28. 28.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
29. 29.True or false: “It rained on my birthday once, so it always rains on birthdays.” gives enough evidence. (a) False (b) True
30. 30.🧩 The film starts at 5 PM and lasts 3 hours. When does it end? (a) 5 PM (b) 9 PM (c) not enough info (d) 8 PM
31. 31.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) 8 PM (d) not enough info
32. 32.🧩 Saanvi bought 5 mangoes for ₹75 in all. Each mango cost the same. What did one mango cost? (a) not enough info (b) ₹20 (c) ₹75 (d) ₹15
33. 33.🧩 The film starts at 6 PM and lasts 1 hour. When does it end? (a) 6 PM (b) 7 PM (c) 8 PM (d) not enough info
34. 34.🧩 A box has 4 rows of guavas, with 7 in each row. How many guavas are in the box? (a) 28 (b) not enough info (c) 35 (d) 11
35. 35.🧩 A box of laddoos has 5 in each row. How many laddoos are in the box? (a) 10 (b) not enough info (c) 50 (d) 5
36. 36.🧩 Rohan bought 4 markers and a cap for ₹180 in all. Each marker cost the same. What did one marker cost? (a) ₹176 (b) ₹45 (c) ₹180 (d) not enough info
37. 37.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) not enough evidence (b) enough evidence
38. 38.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 2 PM (c) 6 PM (d) 5 PM
39. 39.🧩 Meera is 10 years old. Arjun is 8 years older than Meera. How old is Arjun? (a) 8 (b) not enough info (c) 18 (d) 19
40. 40.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

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