Evidence and Missing Information Worksheet

Critical thinking lesson 9: Enough evidence and missing information · Set 819 · 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.🧩 The film starts at 6 PM. It is a long film. When does it end? (a) 8 PM (b) not enough info (c) 9 PM (d) 7 PM
2. 2.🧩 Enough evidence or not? “A dog barked at me once, so all dogs are mean.” (a) not enough evidence (b) enough evidence
3. 3.🧩 The film starts at 2 PM and lasts 3 hours. When does it end? (a) not enough info (b) 6 PM (c) 5 PM (d) 2 PM
4. 4.🔬 Why do scientists repeat an experiment? (a) to be sure of results (b) to waste time (c) to change answers (d) for fun only
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) True (b) False
6. 6.🧩 Nisha is 7 years old. Saanvi is older than Nisha. How old is Saanvi? (a) 8 (b) not enough info (c) 12 (d) 9
7. 7.🧩 Enough evidence or not? “One mango in the box was sour, so all the mangoes are sour.” (a) not enough evidence (b) enough evidence
8. 8.🧩 Meera is 7 years old. Ishaan is 6 years older than Meera. How old is Ishaan? (a) not enough info (b) 14 (c) 6 (d) 13
9. 9.🧩 Arjun is 10 years old. Rohan is 9 years older than Arjun. How old is Rohan? (a) 9 (b) not enough info (c) 20 (d) 19
10. 10.🧩 Tara bought 2 balls and a water bottle for ₹120 in all. Each ball cost the same. What did one ball cost? (a) ₹118 (b) ₹120 (c) not enough info (d) ₹60
11. 11.True or false: “We measured the plant every day for a month; it grew 9 cm.” gives enough evidence. (a) True (b) False
12. 12.📊 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
13. 13.🧩 Ishaan is 9 years old. Arjun is older than Ishaan. How old is Arjun? (a) 14 (b) 10 (c) not enough info (d) 11
14. 14.🧩 The film starts at 2 PM and lasts 1 hour. When does it end? (a) 2 PM (b) 4 PM (c) 3 PM (d) not enough info
15. 15.🧩 Enough evidence or not? “One student said the canteen food was cold, so it is always cold.” (a) not enough evidence (b) enough evidence
16. 16.🧩 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
17. 17.True or false: “One student said the canteen food was cold, so it is always cold.” does not give enough evidence. (a) False (b) True
18. 18.🐕 One dog barked at you. What is the fair conclusion? (a) dogs hate you (b) never see dogs (c) all dogs are mean (d) that one dog barked
19. 19.🧩 Enough evidence or not? “We asked all 30 classmates; 25 chose the zoo trip.” (a) enough evidence (b) not enough evidence
20. 20.🧩 Rohan is 11 years old. Aarav is 3 years older than Rohan. How old is Aarav? (a) 3 (b) 14 (c) not enough info (d) 15
21. 21.True or false: “One mango in the box was sour, so all the mangoes are sour.” gives enough evidence. (a) True (b) False
22. 22.🧩 Before solving a word problem, first check… (a) your handwriting (b) the page number (c) what facts are given (d) the colour of ink
23. 23.True or false: “We tested 20 seeds, and 18 of them sprouted.” does not give enough evidence. (a) True (b) False
24. 24.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
25. 25.🥭 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) no, check more (d) yes, mangoes match
26. 26.True or false: “We checked all 40 mangoes in the box; every one was ripe.” does not give enough evidence. (a) False (b) True
27. 27.True or false: “We tested 20 seeds, and 18 of them sprouted.” gives enough evidence. (a) True (b) False
28. 28.🧩 The film starts at 4 PM. It is a long film. When does it end? (a) 7 PM (b) 6 PM (c) not enough info (d) 5 PM
29. 29.🧩 The film starts at 2 PM. It is a long film. When does it end? (a) 5 PM (b) not enough info (c) 3 PM (d) 4 PM
30. 30.🧩 A box has 6 rows of mangoes, with 7 in each row. How many mangoes are in the box? (a) 49 (b) 42 (c) not enough info (d) 13
31. 31.🧩 Meera bought 5 mangoes for ₹250 in all. Each mango cost the same. What did one mango cost? (a) ₹250 (b) not enough info (c) ₹50 (d) ₹55
32. 32.🧩 Enough evidence or not? “It rained on my birthday once, so it always rains on birthdays.” (a) enough evidence (b) not enough evidence
33. 33.📝 What does “evidence” mean? (a) facts that support it (b) a loud opinion (c) a guess (d) a rumour
34. 34.🧩 Enough evidence or not? “We measured the plant every day for a month; it grew 9 cm.” (a) not enough evidence (b) enough evidence
35. 35.🧩 The film starts at 5 PM. It is a long film. When does it end? (a) 6 PM (b) not enough info (c) 8 PM (d) 7 PM
36. 36.🧩 Arjun bought 6 pens and a water bottle for ₹290 in all. Each pen cost the same. What did one pen cost? (a) ₹290 (b) ₹48 (c) not enough info (d) ₹284
37. 37.🧩 Arjun is 7 years old. Saanvi is older than Arjun. How old is Saanvi? (a) not enough info (b) 12 (c) 9 (d) 8
38. 38.True or false: “We checked all 40 mangoes in the box; every one was ripe.” gives enough evidence. (a) False (b) True
39. 39.🧩 Diya bought 3 pens and a water bottle for ₹120 in all. Each pen cost the same. What did one pen cost? (a) not enough info (b) ₹40 (c) ₹117 (d) ₹120
40. 40.🧩 Saanvi bought 3 markers for ₹105 in all. Each marker cost the same. What did one marker cost? (a) ₹105 (b) ₹40 (c) not enough info (d) ₹35

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